Dyfyniad APA

Upton, M. (1976). Agricultural production economics and resource-use. Oxford University Press.

Dyfyniad Arddull Chicago

Upton, Martin. Agricultural Production Economics and Resource-use. London: Oxford University Press, 1976.

Dyfyniad MLA

Upton, Martin. Agricultural Production Economics and Resource-use. Oxford University Press, 1976.

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