00317nam a2200121Ia 4500008004100000082001800041100001900059245002200078250000900100260003200109300000600141650004800147150614s9999    xx            000 0 und d  a306.81  MOU-M  aRobert R.Blake  aThe Marriage Grid  aI ED  bMcGraw Hill Book Co, N Yc0  a0  aThe Marriage Grid  Robert R.Blake,Sociology