qayum, a. (1964). cumulative marginal productivity life of plants and the optimal technology. the institute of national planning.
Cytowanie według stylu Chicago (wyd. 17)qayum, a. Cumulative Marginal Productivity Life of Plants and the Optimal Technology. cairo: the institute of national planning, 1964.
Cytowanie według stylu MLA (wyd. 9)qayum, a. Cumulative Marginal Productivity Life of Plants and the Optimal Technology. the institute of national planning, 1964.