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Reviews the contributions of Mendel, the Hertwigs, and Miescher to our understanding of modern genetics. Discusses chromosome chemistry in terms of the cytological distribution of nucleic acids, t...
Shows how freedom was prized during World War II despite its high cost in desolation and hunger and how more fortunate peoples helped liberate Europe by fighting the threat of famine.
Vignettes of everyday life and events in two indigenous Mexican villages provide breadth of subject-matter for vocabulary exercise. Sentences of the Spanish narration are nearly all declarative, an...
Presents the importance of farming and farm life in Indiana and shows how mechanized methods have improved products and brought better economic conditions to the farmers. Explains what the Farm Bu...
Made as a warning to the English people, this film re-enacts, in a Welsh mining town, the events that took place in the Czechoslovakian mining town of Lidice, which resisted the Nazis in subversive...
Uses a dramatized, "on-the-scene" news type of interviewing and documentary reporting to present the story of how Dr. Pinel fought for improved treatment of the insane. Describes his principles tha...
Uses animation to show a train changing shape and color set to much. This is achieved by drawing directly on the film, a technique for fast-paced animated short films. Without narration.
Presents a number of family situations to show that behavior of a child depends on his age and how the development of an individual's personality is affected by many family factors. Portrays exampl...
Presents in detail step-by-step techniques used in gravimetric analysis and the preparation and use of both the Gooch crucible filter and regular filter paper in this type of chemical analysis. Par...