000 00303nam a2200121Ia 4500
008 221001s1971 xx 000 0 eng d
082 _a330.9 KHA
100 _aKhanna, K. K.
245 0 _aWorld resources and trade
260 _aDelhi
_bSultan Chand & Sons.
_c1971
300 _axvi, 713p.
942 _2ddc
_cBK
999 _c528
_d528