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Table of Contents

March 1998
Volume 7, Number 3

FEATURES

17 The Thermal Desorption Alternative
The hazard of using carbon disulfide may soon end for occupational hygienists
Elizabeth Woolfenden
24 The Tedious Hunt for Cryptosporidium
The water "bug" that ravaged Milwaukee proved to be a micro-needle in a public haystack
Laura Conrad

DEPARTMENTS

8 UPDATE
12 LETTERS
15 KEEPING UP
31 INDUSTRY TODAY
US chemical firms grow more dependent on international customers
David M. Kiefer
35 HEALTH PERSPECTIVES
Super supplements or snake oil?
Trevor Smith
45 PERSONAL BUSINESS
Buy or lease equipment? It's a close call
Dickinson J. Miller
48 REGULATIONS AND YOU
Lab accreditation is all over the map
Helen Gillespie
57 THE WAY WE WERE
The borax bonanza of Death Valley
David M. Kiefer
61 CHEMICAL LANDMARKS
Chemistry greats from the Great Lakes
Bryan D. Tweedy
65 NEW PRODUCTS
72 COMMENT
The constancy of change
James F. Ryan