An introduction to agricultural systems
Spedding, C. R. W. (Colin Raymond William)
An introduction to agricultural systems C. R. W. Spedding - London Applied Science Publishers 1979 - ix,169 p. : ill. ; 23 cm.
Bibliography P.162- p.166
0853348235
Agriculture
An introduction to agricultural systems C. R. W. Spedding - London Applied Science Publishers 1979 - ix,169 p. : ill. ; 23 cm.
Bibliography P.162- p.166
0853348235
Agriculture
