Text ( visual ) : unmediated Agricultural change in developed countries / Ian Bowler. -- : pbk. -- Cambridge : Cambridge University Press , 1996. -- 92 p. : ill., maps ; 30 cm. -- (Update). -- Bibliography: p. 91-92 ; At foot of t.p.: Queen Mary and Westfield College, University of London. -- ISBN 0521468469 ; (BA43376431) ; https://ci.nii.ac.jp/ncid/BA43376431 Author Heading(s): Bowler, Ian R.. -- Classification(s): LCC : S419 ; DC20 : 338.1/09172/2. -- Subject Heading(s): LCSH : Agriculture -- History ; LCSH : Agricultural innovations -- History

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