na INLIS000000000003716 Inggris 0010-0621000002 Resouce structure of agriculture: an economic analysis Keith Cowling; David Metcalf; A.j. Rayner Cowling, Keith Oxford Pergamon Press 1970 xiii, 248 p.: ill.; 22 cm. 631.16 COW r 631.16 AGRICULTURE ECONOMIC ANALYSIS RESOURCES 572/KA/2021 2/KA/2021