000 00259nam a2200109Ia 4500
008 220201s1978 xx 000 0 eng d
082 _a620.11
_bNAT
100 _aNat, DS
245 0 _aMaterials & metallurgy
260 _bLudhiyana: Katson
_c1978
942 _2ddc
999 _c80672
_d80672