Working or Discussion Paper Maclennan, J. A. ENTERPRISE COSTS STUDIES 1953 WHEAT AND BARLEY COSTS 17 English Agricultural Finance; Crop Production/Industries; 1954-11

http://ageconsearch.umn.edu/record/271882/files/edinburgh059.pdf; http://ageconsearch.umn.edu/record/271882/files/edinburgh059.pdf?subformat=pdfa;