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SCIENCE AND EDUCATION FILM: Driving out god of plague
SCIENCE AND EDUCATION FILM: Drought Relief of People\'s Commune
SCIENCE AND EDUCATION FILM: Duck breeding
SCIENCE AND EDUCATION FILM: Duck disease prevention and control-duck hepatitis
SCIENCE AND EDUCATION FILM: Ductile cast iron
SCIENCE AND EDUCATION FILM: Dust mites and asthma
SCIENCE AND EDUCATION FILM: East Yan\'an Road Tunnel in Shanghai
SCIENCE AND EDUCATION FILM: Ecological engineering in livestock farm
SCIENCE AND EDUCATION FILM: Eighteen Steps of Practicing traditional Chinese gymnastics
SCIENCE AND EDUCATION FILM: Eighteen Steps of Practicing traditional Chinese gymnastics
SCIENCE AND EDUCATION FILM: Eighteen Steps of Practicing traditional Chinese gymnastics
SCIENCE AND EDUCATION FILM: Electric tools made in China
SCIENCE AND EDUCATION FILM: Electrical Safety in Coal Mine
SCIENCE AND EDUCATION FILM: Electroplating wastewater treatment-intermittent counter-current rinsing
SCIENCE AND EDUCATION FILM: Energy recycling
SCIENCE AND EDUCATION FILM: Etching Art