000 00276nam a2200109Ia 4500
008 220201s1975 xx 000 0 eng d
100 _aGurucharan Singh
245 0 _aPadarth samarthya & nirman vigyan k sidhant
260 _bStandard Pub
_c1975
300 _a998
942 _2ddc
999 _c81854
_d81854