000 00424nam a2200169Ia 4500
008 180323s9999 xx 000 0 und d
020 _anil
082 _a370
100 _a   Singh, Y.K.
245 0 _aXYZ Teaching of environmental science
250 _a1st
260 _aNew Delhi
_bIndian Pub.House
300 _aNot covered syllabus
500 _a2628
650 _aEnvironmental science - teachi
942 _cBOOK
999 _c8435
_d8435