00283nam a2200109Ia 4500008004100000020001800041082001500059100002800074245001800102260004500120300000800165190710s9999    xx            000 0 und d  a81-7488-119-0  a574.5 D642  aDiwan, A P and Arora, D 0aHuman ecology  aNew DelhibAnmol Publications Pvt.c2000  a399