qayum, a. (1964). cumulative marginal productivity life of plants and the optimal technology. the institute of national planning.
Lua i Stíl Chicago (17ú heag.)qayum, a. Cumulative Marginal Productivity Life of Plants and the Optimal Technology. cairo: the institute of national planning, 1964.
Lua MLA (9ú heag.)qayum, a. Cumulative Marginal Productivity Life of Plants and the Optimal Technology. the institute of national planning, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.