Dyfyniad APA

qayum, a. (1964). cumulative marginal productivity life of plants and the optimal technology. the institute of national planning.

Dyfyniad Arddull Chicago

qayum, a. Cumulative Marginal Productivity Life of Plants and the Optimal Technology. cairo: the institute of national planning, 1964.

Dyfyniad MLA

qayum, a. Cumulative Marginal Productivity Life of Plants and the Optimal Technology. the institute of national planning, 1964.

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