01517nam a2200169Ia 450000500170000000800410001702000120005808200190007010000250008924500320011425000120014626000390015830000080019750511170020594200080132299900170133020241209164318.0241209s9999    xx            000 0 und d  afca7076  aS.C./031/B73/8  aGrolier Incorporated 4aThe book of popular science  a1a. ed.  aCanadabGrolier Incorporatedc1967  a420  aThe universe. The galaxies. Astronomical observatories. The milky way. The earth. The work of running water. Geysers and volcanoes. Water in the ground. Changing shorelines. Plant life. Soilless agriculture. Diseases of garden plants. Animal life. The dog family. The gnawing animals. The wily weasel family. The cats. The deer family. Civets, mongooses and hyenas. The antelope family. Man. A baby is born. Growth, development and decline. The races of mankind. heredity in man. Health. On growing old. The cancers. The true parasites. Matter and energy. Progress in acoustics. A bit of electronic history. The strange world of "silent" sound. The land theory of color vision. the chemist as creator. The cosmic rays. Industry. Irrigation at work. the growing world of plastics. A mighty force. The story of dams. Glass houses. Transportation. Guidance in space. Science through the eges. Science and progress (1815 - 1895). The twentieth century (1895 - )  Projects and experiments. Experiments with water. Competitions for young scientisit. Home aquariums. experiements with ligth. Experiments with magnetism.  yS.C  c23637d23637