00296nam a2200121Ia 4500082002200000100001600022245005100038260000900089300001400098490000900112490004800121500000500169  a333.530973 B827b  aBray, J. O.  aFarm tenancy and productivity in agricultureb  c1963  app. 25-38  v1963  aFood Research Institute studies, v.4, no.1   a