The agricultural systems of the world : an evolutionary approach /
Grigg, D B
The agricultural systems of the world : an evolutionary approach / - Great Britain : Cambridge University Press , 1974. - ix, 358 p. : ill. ; 20 cm.
9780521098434
630 GRI
The agricultural systems of the world : an evolutionary approach / - Great Britain : Cambridge University Press , 1974. - ix, 358 p. : ill. ; 20 cm.
9780521098434
630 GRI