00522    a2200193   4500041000800000082001800008100004100026100002100067245008500088260005400173300001000227518001400237650001300251650001300264650001600277650001400293650001000307653001100317  aEng  a301.42bB654l  aBossard, James Herbert Siward, 1888-  aBoll, Eleanor S.  aThe large family systemban original study in the sociology of family behaviour   aPhildadelphiabUniv. of Pennsylvania  Pressc1956  a325p,  a2067-11-3  aChildren  aSiblings  aInteraction  aFormation  aChild  aFamily