000 00228 a2200097 4500
001 43020
100 _aHussain S
245 _aElementary theory of numbers
260 _aLahore
_bThe carver book house
_c
090 _c26893
_d26893
942 _aNUST-CAE
_cM
_c18772
999 _c278093
_d278093