ScienceJohn Michels (Journalist) 1940 |
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Page 109
... period in American indus- trial history in which the greatest mechanical develop- ments have occurred , much of ... period of growth began . This second period of development was marked by the increase in the society's activities and ...
... period in American indus- trial history in which the greatest mechanical develop- ments have occurred , much of ... period of growth began . This second period of development was marked by the increase in the society's activities and ...
Page 309
... period of 27.25 days . The periods were separated by 872 days ( 32 rotation periods ) in order to include the sun- spot maxima of 1917 and of 1927-28 . The Character Figures of Solar Phenomena , as given in volumes I and II of ...
... period of 27.25 days . The periods were separated by 872 days ( 32 rotation periods ) in order to include the sun- spot maxima of 1917 and of 1927-28 . The Character Figures of Solar Phenomena , as given in volumes I and II of ...
Page 372
... period , in which was produced his definitive biography of Audubon ; the third and final period was devoted to a study of the American eagle , which in many ways epitomizes his life - long work on the habits , the origins and the ...
... period , in which was produced his definitive biography of Audubon ; the third and final period was devoted to a study of the American eagle , which in many ways epitomizes his life - long work on the habits , the origins and the ...
Contents
STEVENS S S and J VOLKMANN Sensory Discrimina | 1 |
Civil Service Positions 232 | 9 |
LUKENS F D W and F C DOHAN Diabetic Cats 222 | 10 |
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