000 00329nam a2200121Ia 4500
008 211228s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aKrishna, Kumar
245 0 _aReferance service
250 _a2nd rev. edn
260 _bVikas Publication House.
_aGaziabad
_c1980
942 _c1
999 _c208145
_d208145