Introduction to agricultural systems
Spedding, C.R.W.
Introduction to agricultural systems C.R.W. Spedding - London Applied Science Publishers 1979 - ix, 169 p.; 22cm.
9780853348238
630 SP31I
Introduction to agricultural systems C.R.W. Spedding - London Applied Science Publishers 1979 - ix, 169 p.; 22cm.
9780853348238
630 SP31I