ScienceJohn Michels (Journalist) 1952 |
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Стр. 4
... AGRICULTURAL SOIL COMPACT RED SAND YELLOW SAND AT BASE MICROGRAMS PER 100 GRAMS FIG . 2. Distribution of extractable ... agricultural soil , and the mineral forms were nearly absent . If so , a most severe weathering and a very old ...
... AGRICULTURAL SOIL COMPACT RED SAND YELLOW SAND AT BASE MICROGRAMS PER 100 GRAMS FIG . 2. Distribution of extractable ... agricultural soil , and the mineral forms were nearly absent . If so , a most severe weathering and a very old ...
Стр. 52
... agricultural re- search and practices that will lead to the best long- time utilization of the nation's agricultural resources . The plan establishes the ARI as a fiscal organization of industries having a stake in agriculture , partici ...
... agricultural re- search and practices that will lead to the best long- time utilization of the nation's agricultural resources . The plan establishes the ARI as a fiscal organization of industries having a stake in agriculture , partici ...
Стр.
... Agricultural Relations , on assignment to the Dominican Republic . insecticides were used a nearly complete biological control existed . In the Dominican Republic , such claims for the insecticides , however , are not supported by the ...
... Agricultural Relations , on assignment to the Dominican Republic . insecticides were used a nearly complete biological control existed . In the Dominican Republic , such claims for the insecticides , however , are not supported by the ...
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News and Notes | 6 |
Technical Papers | 12 |
Comments and Communications | 19 |
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