Development of broad audio-visual services with limited facilities.
D001296:Audiovisual Aids / Q000706:statistics & numerical data*; D004501:Education, Medical; D006801:Humans; D008829:Microbiology / Q000193:education; D010781:Photography / Q000295:instrumentation*; D010784:Photomicrography / Q000295:instrumentation; D013785:Thailand