000 00297nam a22000977a 4500
008 150911b xxu||||| |||| 00| 0 eng d
020 _a814781551.
082 _a330.9 OPT
245 _aOPTIMUM SOCIAL WELFARE AND PRODUCTIVITY:
_bA COMPARATIVE VIEW
260 _aNEW YORK:
_bNEW YORK UNIVERSITY PRESS,
_c1972.
999 _c2865
_d2865