00337nam a2200109Ia 4500082002500000100003800025245006400063260004600127300001700173500000500190700003200195  a304.6209545bW992.PP  aWyon, John B. and Gordon, John E.  aPopulation problems in the rural Punjab; the Khanna studyb  aCambridgebHarvard University Pressc1971  axxiii, 437p.  a  aGordon, John E. ; jt. auth.