The Encyclopedia Americana, Volume 7Grolier, 1988 - Encyclopedias and dictionaries |
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Page 35
Raleigh letter " of April 27 , 1844 , Clay came out against annexation “ at the present time ” ; a similar letter by Van Buren ( collusion has always been suspected but never proved ) appeared on the same day . The intent of the letters ...
Raleigh letter " of April 27 , 1844 , Clay came out against annexation “ at the present time ” ; a similar letter by Van Buren ( collusion has always been suspected but never proved ) appeared on the same day . The intent of the letters ...
Page 36
36 CLAY is a material of widespread occurrence . It is found on the earth's surface as a weathering product of rocks , in stratiform deposits that lie near the surface or at greater depths , and in massive distribution associated with ...
36 CLAY is a material of widespread occurrence . It is found on the earth's surface as a weathering product of rocks , in stratiform deposits that lie near the surface or at greater depths , and in massive distribution associated with ...
Page 37
A great deal of the importance of a soil for agricultural purposes may depend upon this clay mineral content . Its value depends upon a number of other factors as well , such as its moisture , chemical constituents , porosity , organic ...
A great deal of the importance of a soil for agricultural purposes may depend upon this clay mineral content . Its value depends upon a number of other factors as well , such as its moisture , chemical constituents , porosity , organic ...
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