AN INTRODUCTION TO ECOLOGY: SIX BASIC SYSTEMS.

GRAVLEE JET WASHER FOR ENDOMETRIAL ANALYSIS. Upjohn Co. 5 min., sd., color, 16 mm. © Upjohn Co.; 13May71; LP38971.

THE GREAT CONTINENTAL OVERLAND CROSSCOUNTRY RACE. Mirisch-DePatie-Freleng. Released by United Artists Corp. 7 min., sd., color, 35 mm. © Mirisch-D.F.; 23May71; LP39171.

THE GREAT MOJAVE DESERT. National Geographic Society & Metromedia Producers Corp. 51 min., sd., color, 16 mm. © National Geographic Society; 4Feb71; MP21267.

THE GREAT PINTO BEAN GOLD HUNT. See

DEATH VALLEY DAYS.

GREAT STORIES--BIBLE STORIES. American Lutheran Church, Dept. of TV/Radio/Films. Made by Cameo Productions. 65 reels (5 min. each), sd., color, 16 mm. Released in cooperation with Broadcasting & Film Commission of National Council of Churches. © American Lutheran Church; 1Sep69; LP38775.

GREAT WRITERS OF THE UNITED STATES (Filmstrip) Pathescope Educational Films. 6 filmstrips, color, 35 mm. With Teacher's manual, 100 p.

Contents: Washington Irving. 59 fr.--Ralph Waldo Emerson. 58 fr.--Henry David Thoreau. 58 fr.--Nathaniel Hawthorne. 58 fr.--Henry Wadsworth Longfellow. 59 fr.--Herman Melville. 58 fr.

Credits: Script & photography, Warren Murray.