University of Zambia Library Search for 'se,phr:"Visual aid"'

Exfoliative cytology.

By Stafford, Marvin W.. Philadelphia : Saunders, 1973 , Captions with each frame.

By Blaustein, Ancel U.. Philadelphia : Saunders, 1972 , Audible and sub-audible signals to synchronize sound presentation with filmstrips.

By Blaustein, Ancel U.. Philadelphia : Saunders, 1972 , Audible and sub-audible signals to synchronize sound presentation with filmstrips.