'An estimate of the number of people in England and Wales, in total and by region, whose present livelihood depends upon the exercise of horticultural skill ; with comments upon the employment-compensating effect of this number within the agricultural sector'.
Employment in horticulture by R. R. W. Folley. ISBN 0901859753. Published by Wye College, Agricultural Economics Unit, School of Rural Economics and Related Studies in 1978. Publication and catalogue information, links to buy online and reader comments.