000 00294nam a2200121Ia 4500
008 220201s1987 xx 000 0 eng d
082 _a020.3
_bTYA
100 _aTyagi, D S
245 0 _aPustakalya vigyan shabd kosh
260 _aDelhi
_bSahitya Prakashan
_c1987
300 _a124
942 _2ddc
999 _c25620
_d25620