/cgi-bin/koha/opac-search.pl?idx=&q=au%3A%22Helfert%20E%20A%22&sort_by=title_asc&format=rss 7 0 50 ISBN:0-07-059041-9 /cgi-bin/koha/opac-detail.pl?biblionumber=1305718 ]]> By Helfert E A.
New Delhi New Delhi, McGraw Hill 2004 .
xix,457 0-07-059041-9

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]]> /cgi-bin/koha/opac-detail.pl?biblionumber=1305718 ISBN:0-256-03625-X /cgi-bin/koha/opac-detail.pl?biblionumber=1293055 ]]> By Helfert E A.
USA USA, IRWIN 1987 .
xiii,458 0-256-03625-X

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]]> /cgi-bin/koha/opac-detail.pl?biblionumber=1293055 ISBN: /cgi-bin/koha/opac-detail.pl?biblionumber=1281665 By Helfert E A.
London London, Richard D Irwin 1972 .
270p

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]]> /cgi-bin/koha/opac-detail.pl?biblionumber=1281665 ISBN: /cgi-bin/koha/opac-detail.pl?biblionumber=1281643 By Helfert E A.
NY NY, Richard D Irwin 1972 .
270p

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]]> /cgi-bin/koha/opac-detail.pl?biblionumber=1281643 ISBN: /cgi-bin/koha/opac-detail.pl?biblionumber=1275468 By Helfert E A.
USA USA, Richard D Irwin 1972 .
270p

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]]> /cgi-bin/koha/opac-detail.pl?biblionumber=1275468 ISBN: /cgi-bin/koha/opac-detail.pl?biblionumber=1275467 By Helfert E A.
USA USA, Richard D Irwin 1972 .
270p

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]]> /cgi-bin/koha/opac-detail.pl?biblionumber=1275467 ISBN: /cgi-bin/koha/opac-detail.pl?biblionumber=1282226 By Helfert E A.
NY NY, Richard D Irwin 1972 .
270p

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