00501     2200181   4500001002100000005001500021035002000036008004100056245006100097100002300158260003300181300002500214020001800239084001700257082001100274650002000285990001400305INLIS00000000000042120260225111745  a0010-0317000419260225                           0      1 aAn Introduction to abstract algebra /cThomas A Whitelaw1 aWhitelaw, Thomas A  bBlackie & Son Limited,c1978  aix,166 hlm. ;c22 cm  a0 216 90488 9  a512 02 Whi i  a512 02  aALJABAR ABSTRAK  a126688112