1. 1. Best, R. H. and Gasson, R. M. : The Changing Location of Intensive Crops. Studies in Rural Land Use, Report No. 6, Wye, The College, 1966.
2. 2. Boddington, M. A. B. and Wibberley, G. P. : ‘The Assessment of the Agricultural Implications of a Third London Airport’ in C.T.L.A. 1970a.
3. The Analysis of Net Farm Income: An Examination of Farm Management Survey Data;Britton;J.A.E.,1970