Science, Том 58American Association for the Advancement of Science, 1923 Since Jan. 1901 the official proceedings and most of the papers of the American Association for the Advancement of Science have been included in Science. |
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Стр. 36
... soil . Study of soil conditions at these various levels , then , is essential to an understanding of physiolog- ical behavior and ecological relations of plants grow- ing in the open . One condition is soil acidity , and of subsoil ...
... soil . Study of soil conditions at these various levels , then , is essential to an understanding of physiolog- ical behavior and ecological relations of plants grow- ing in the open . One condition is soil acidity , and of subsoil ...
Стр. 228
... soil solution . The writers , following the suggestion of Parker , have recently shown1 that solu- tions displaced from tightly compacted soils have uni- form concentrations in their successive increments up to the time the displacing ...
... soil solution . The writers , following the suggestion of Parker , have recently shown1 that solu- tions displaced from tightly compacted soils have uni- form concentrations in their successive increments up to the time the displacing ...
Стр. 353
... SOIL SOLUTION The nature and promise of the soil solution : JOHN S. BURD . The relation between the soil solution and the water extract of alkali soils : P. L. HIBBARD . Secular changes in the soil solution : JOHN S. BURD . The ...
... SOIL SOLUTION The nature and promise of the soil solution : JOHN S. BURD . The relation between the soil solution and the water extract of alkali soils : P. L. HIBBARD . Secular changes in the soil solution : JOHN S. BURD . The ...
Содержание
Acidity Subsoil A P KELLEY 36 | 13 |
Quotations 14 32 50 92 109 121 142 162 181 206 | 14 |
VOL LVIII | 20 |
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