hansen, b. (1965). marginal productivity wage theory and subsistence agriculture. the institute of national planning.
Dyfyniad Arddull Chicagohansen, bent. Marginal Productivity Wage Theory and Subsistence Agriculture. cairo: the institute of national planning, 1965.
Dyfyniad MLAhansen, bent. Marginal Productivity Wage Theory and Subsistence Agriculture. the institute of national planning, 1965.