| Use and limitations of physical-chemical criteria for assessing the status of phosphorus in soils
|
1980 |
Olsen, S. R. |
| Phosphate fertilizers and process technology
|
1980 |
Young, Ronald D. |
| Phosphate nutrition of corn, sorghum, soybeans, and small grains
|
1980 |
Hanway, J. J. |
| Agricultural phosphorus in the environment
|
1980 |
Taylor, A. W. |
| Use of waste materials as sources of phosphorus
|
1980 |
Sommers, L. E. |
| The phosphate industry of the United States
|
1980 |
Cathcart, James B. |
| World phosphate reserves and resources
|
1980 |
Cathcart, James B. |
| Sulfur requirements of the phosphate fertilizer industry
|
1980 |
Bixby, D. W. |
| Interactions of phosphorus with other elements in soils and in plants
|
1980 |
Adams, Fred |
| Posphate raw materials and fertilizers : P. 1 ; a look ahead
|
1980 |
Lehr, James R. |
| Energy of phosphate fertilizer applications and food energy returns
|
1980 |
Burrows, William C. |
| Phosphorus nutrition of forages
|
1980 |
Mays, D. A. |
| Phosphate nutrition of plants, a general treatise
|
1980 |
Ozanne, P. G. |
| Relationship between phosphorus nutrition of plants and the phosphorus nutrition of animals and man
|
1980 |
Reid, R. L. |
| Energy requirements for the production of phosphate fertilizers
|
1980 |
White, William C. |
| Evaluation of phosphatic raw materials
|
1980 |
McClellan, G. H. |
| Phosphorus nutrition of vegetable crops and sugar beets
|
1980 |
Lorenz, O. A. |
| World phosphate fertilizer supply-demand outlook
|
1980 |
Harre, E. A. |
| Phosphate raw materials and fertilizers : a case history of marginal raw materials
|
1980 |
Hoare, John |
| Reactions of phosphate fertilizers in soils
|
1980 |
Sample, E. C. |
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