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A. Schaich Fries

A.F. ยท A. S.

titleISBN-13
(ISBN-10)		year of publica-
tion		other author(s)
Information Service on Chemical Substances and Products: Experiences from a Telephone Information Service978-92-826-4293-1
(92-826-4293-3)		1993L. Frimann Hansen

A. Schantzen