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Techniceskie kulʹtury, kartofelʹ, ovos︣c︣e-bachc︣evye i kormovye kulʹtury
Nikolʹskaja, V. S., (1957)
Economic trends in the sweet potato industry
Harper, A. C., (1954)
La patata in Italia
Benvenuti, Antonio, (1957)
Economic aspects of farm irrigation : a survey carried out on groups of East Midland farms in 1961 and 1962
Ingersent, K. A., (1964)
Costs of farm irrigation : a survey carried out on a group of East Midland farms in 1961
Ingersent, K. A., (1962)
Sugar prices and stocks
Ingersent, K. A., (1975)