00442nam a2200169Ia 4500082001900000100002400019245003500043260002300078300001400101500000500115690000600120700000500126952010000131964001700231921000900248999001500257  a338.9bB565.SB  aBettelheim, Charles  aSome basic planning problemsb  aBombaybAsiac1963  avii, 68p.  a  a   a  00104070aISIbISId1998-08-25l0o338.9 B565.SBpDP1361r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a5915  c5915d5915