By Sigurdsson J.F.   Gudjonsson G.H.   in Journal of Adolescence

ISSN:0140-1971|19|1|41-46

Academic Press‎(1996)‎

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By TAN K.S.   SIGURDSSON J.B.   in Journal of Molluscan Studies

ISSN:1464-3766|62|4|517-535

Oxford University Press‎(1996)‎

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By Sigurdsson J.F.   Gudjonsson G.H.   in Journal of Adolescence

ISSN:0140-1971|19|2|121-126

Academic Press‎(1996)‎

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By Kristjansson K.   Ljungman S.   Bengtsson C.   Björkelund C.   Sigurdsson J. A.   in Scandinavian Journal of Urology and Nephrology

ISSN:0036-5599|35|1|63-70

Informa Healthcare‎(2001)‎

Access to resources Favorite 1.5383672