000 00351nam a2200145Ia 4500
008 150416s9999||||xx |||||||||||||| ||und||
082 _a372.357 SIN
100 _a"Singh, Y K"
245 _aTeaching Eniveronmental Science
250 _a2009
260 _b"A.P.H.Publishing Corp,"
300 _a372.357 SIN
600 _aEducation
942 _2ddc
_cBK
999 _c5569
_d5569