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Uses animation, diagrams, plans, scale models, and scenes of representative buildings (particularly French cathedrals) to explain and illustrate the development of Gothic architecture in the 12th a...
Illustrates abnormalities in gait caused by pain, structural defects and deformities, neuromuscular disorders, and a combination of these causes. Details technical symptoms of the gait and posture ...
Shows some properties that distinguish gases. The volume of ammonia and hydrogen chloride that combine are measured quantitatively, and simple integer volume ratios are measured for the combination...
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...
Presents some of the steps and procedures involved in conducting controlled breeding experiments and shows the results of some genetic crosses. Introduces three important areas of genetic research....
Portrays the frequency of mutants in the population gene pool as dependent upon their rate of origination and selection coefficient. Discusses the population fate of dominant lethals (retinoblasto...
Explains the nature and importance of population genetics. Derives the Hardy-Weinberg equilibrium principle for Mendelian (cross-breeding) populations. Points out that though the Hardy-Weinberg la...
Descusses the economic concepts related to land, climate, and major resources in the countries of Colombia, Venzuela, and the three Guianas. Includes scenes of the people and of their ways of life,...
Describes the physical geography of Australia and some of its natural resources, such as wheat, cattle, wool, and timber. Shows how the use of these natural resources has determined the development...
Shows the geological influence on local distribution of plants in the non-glaciated area of southwestern Wisconsin. Highlights many soil conditions and the variety of plants in their region. Catego...
**WARNING: CONTAINS GRAPHIC IMAGES OF LAB TEST ANIMALS** Illustrates the basic techniques of obtaining germfree environment, germfree animals, and methods of germfree miantenance. Demonstrates the...
**WARNING: CONTAINS GRAPHIC IMAGES OF LAB TEST ANIMALS** Illustrates the basic techniques of obtaining germfree environment, germfree animals, and methods of germfree miantenance. Demonstrates the ...
Sixth in the "Are You Ready for Service?" series. Shows the emotional stresses that must be faced in military service because of homesickness, having to take orders and responsibilities, and havin...
Do you like to live in a city? Or would you prefer to move to the suburbs and escape slums, juvenile delinquency traffic jams? Many people are moving to suburbs, and urban areas are growing until, ...
Uses scenes of the geyser area of Yellowstone National Park to portray today's remnents of the earth's activities during formation. Introduces the theme that man has arrived too late to see more th...
Shows the revitalization of Girl Scouting in Kyoto, Japan, after World War II. Pictures the girls making straw shoes, working in paper crafts, practicing first aid, celebrating New Year's in a tra...
Presents rules and playing techniques for girls' basketball as demonstrated by a group of high school players. Distinguishes among various kinds of passing: chest, two-hand underhand, and one-han...
The scene is Virginia, 1765, just after the King's tax proclamation has been read and the legislature is in an uproar. Ensuing events lead to a protest meeting held by patriots at Richmond, at whic...
