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Superphosphate and compound fertilizers : report of a visit to the USA in 1949
(1950)
Superphosphat in Westeuropa und in den Vereinigten Staaten : eine Strukturanalyse der Superphosphat-Wirtschaft
Baade, Fritz, (1953)
The agricultural value of phosphate fertilisers which economise in the use of sulphuric acid : report on a study
Cooke, George W., (1956)
Production in relation to rainfall and superphosphate and erosion
Molnar, I., (1965)
PRODUCTION IN RELATION TO RAINFALL, SUPERPHOSPHATE AND EROSION
Factors Influencing Recent Farm Improvements: Report on a Victorian Survey
Molnar, I., (1959)