000 00366nam a2200157Ia 4500
008 220421s9999||||xx |||||||||||||| ||und||
020 _c195
040 _aBED
082 _a372.707 SIN Y
100 _aSINGH, Y.K.
_92980
245 0 _aTEACHING OF ENVIRONMENT SCIENCE
260 _bA.P.H. PUBLICATION
_aNEW DELHI
300 _a366p.
500 _a1316
942 _cBK
999 _c1316
_d1316