qayum, a. (1964). cumulative marginal productivity life of plants and the optimal technology. the institute of national planning.
Style de citation Chicago (17e éd.)qayum, a. Cumulative Marginal Productivity Life of Plants and the Optimal Technology. cairo: the institute of national planning, 1964.
Style de citation MLA (9e éd.)qayum, a. Cumulative Marginal Productivity Life of Plants and the Optimal Technology. the institute of national planning, 1964.