000 00286nam a2200121Ia 4500
008 221001s1971 xx 000 0 eng d
082 _a330.9 KHA
100 _aKhanna, K. K.
245 0 _aWorld resources
260 _aDelhi
_bSultan Chand
_c1971
300 _axv, 712p.
942 _2ddc
_cBK
999 _c5510
_d5510