$4 from the National Science Teachers Association, 1201 16th Street, NW., Washington, D.C. 20036.)

NASA Facts

Biosatellite II.-Outline of the unamanned space flight experiment of September 1967 to study the effects of weightlessness, radiation, and circadian rhythm on living things. (NF-3, 12 pp., color illus.)

Motion Pictures*

NASA also completed and released four new informational-educational films. These may be borrowed, without charge other than return mailing and insurance costs, from Media Development Division, Code FAD-2, National Aeronautics and Space Administration, Washington, D.C. 20546, or from any NASA Center. (Other films are listed in a brochure supplied from the same addresses.)

Apollo 9: The Space Duet of Spider and Gumdrop (HQ-189). color, 2812 min., 16 mm. Documentary of the Apollo 9 missionthe first earth-orbital rendezvous and docking of the Command Module (Gumdrop) and the Lunar Module (Spider).

Apollo 10: Green Light for a Lunar Landing (HQ-190).-color, 2812 min., 16 mm. This film highlights the mission which took men within nine miles of the lunar surface and paved the way for the first manned lunar landing.

A New Look At An Old Planet (HQ-178).-color, 25 min., 16 mm. How space research and development helps solve some of the problems of man on earth: space-related techniques for discovering such things as mineral deposits, schools of fish, and diseased crops; the use of aerospace technology to improve worldwide communications, weather forecasting, and navigation.

Seas of Infinity (HQa-135-1969).-color, 141⁄2 min., 16 mm. Reviews the planning, development, launching, and operation of the Orbiting Astronomical Observatory carrying telescopes to study the solar system and the stars beyond it.

*NASA loaned 50,000 film prints for non-TV showings to about 4 million people. Prints of NASA films on the Apollo Program were used in 50 cities in the President's Youth Opportunity Program. The Central Film Depository released 59,485 feet of motion picture footage-an increase of 65 percent over the previous period. An additional 322,017 feet of stock footage was catalogued and stored for a total of 9,224,368 feet.

Appendix N

TECHNICAL PUBLICATIONS

(January 1-June 30, 1969)

The following special publications, among those issued during the report period by NASA's Scientific and Technical Information Division, are sold by the Superintendent of Documents, U.S. Government Printing Office (GPO), Washington, D.C. 20402, or by the Clearinghouse for Federal Scientific and Technical Information (CFSTI), Springfield, Va. 22151.

Thermal Radiation Heat Transfer, Vol. II: "Radiation Exchange Between Surfaces and in Enclosures" (John R. Howell and Robert Siegel). This volume treats the exchange of energy between surfaces and in enclosures. NASA SP-164, June 1969. 285 pp. GPO, $1.50.

Relay Program Final Report.-Sequel to "Relay I Final Report" (NASA SP-76), summarizes the operations of the Relay II satellite. NASA SP-151. April 1969. 365 pp. GPO, $3.25.

Significant Achievements in Space Science, 1967.-A summary. NASA SP-167. May 1969. 558 pp. GPO, $2.50.

Earth Photographs from Gemini VI through XII.-A collection of color pictures. NASA SP-171. June 1969. 327 pp. GPO, $8.00.

Batteries For Space Power Systems (Paul Bauer).—A monograph written under contract for OART. NASA SP-172. February 1969. 306 pp. GPO, $1.50.

NASA Science and Technology Advisory Committee For Manned Space Flight: Proceedings of the Winter Study on Uses of Manned Space Flight, 1975-1985. Volume I: Proceedings.-Results of a conference on the application of manned space flight to scientific and technological objectives. NASA SP-196. April 1969. Vols. I and II. 40 pp. CFSTI, $3.00.

Lunar Orbiter I Preliminary Results: Lunar Terrain Assessment and Selenodesy, Micrometeoroid, and Radiation Measurements (J. Kenrick Hughes and Gerald W. Brewer).—NASA SP-197. June 1969. 141 pp. CFSTI, $3.00.

EXAMETNET Data Report Series Annual Report, 1966.—EXAMETNET data acquired by each participant for 1966. NASA SP-175. January 1969. 194 pp. CFSTI, $3.00.

EXAMETNET Data Report Series Annual Report, 1967.-NASA SP-176. April 1969. 184 pp. CFSTI, $3.00.

Proceedings of the Working Group on Extraterrestrial Resources. -Technical papers presented at the Sixth Annual Meeting of this Working Group. NASA SP-177. March 1969. 273 pp. GPO, $2.50.

The Book Of Mars (Samuel Glasstone).-Data on Mars for scientists and intelligent laymen. NASA SP-179. February 1969. 315 pp. GPO, $5.25.

Lectures in High-Energy Astrophysics (H. Ogelman and J. R. Wayland). An expanded and edited version of notes for an introductory graduate level course in high-energy astrophysics. NASA SP-199. June 1969. 165 pp. CFSTI, $3.00.

Models of Trapped Radiation Environment, Vol. V: "Inner Belt Protons" (James P. Lavine and James I. Vette).-Updates and supersedes Volume I. NASA SP-3024. June 1969. 56 pp. CFSTI, $3.00.

Charts for Interpolation of Local Skin Friction from Experimental Turbulent Velocity Profiles (Jerry M. Allen and Dorothy H. Tudor).-Charts calculated from the Fenter-Stalmach law of the wall. NASA SP-3048. May 1969. 37 pp. CFSTI, $3.00.

Real-Gas Effects in Critical Flow Through Nozzles and Thermodynamic Properties of Nitrogen and Helium at Pressures to 300 X 10 Newtons per Square Meter (Approx. 300 ATM) (Robert C. Johnson). A critical-flow factor for calculating the massflow rate of gaseous nitrogen and helium through critical-flow nozzles and the FORTRAN IV subroutines used to calculate the results. NASA SP-3046. January 1969. 201 pp. CFSTI, $3.00.

Astronautics and Aeronautics, 1967: Chronology on Science, Technology, and Policy. A chronology of events and statements. NASA SP-4008. May 1969. 487 pp. GPO, $2.25.