The agricultural systems of the world :
Grigg, D.B.
The agricultural systems of the world : an evolutionary approach / D.B. Grigg. - London : Cambridge University Press, 1979. - ix, 358 p. : ill. ; 24 cm. - Cambridge Geographical studies ; 5 .
Includes bibliographical references and index.
0521202698
Agricultural systems.
S494 .5 .S95 / G75 1979
The agricultural systems of the world : an evolutionary approach / D.B. Grigg. - London : Cambridge University Press, 1979. - ix, 358 p. : ill. ; 24 cm. - Cambridge Geographical studies ; 5 .
Includes bibliographical references and index.
0521202698
Agricultural systems.
S494 .5 .S95 / G75 1979