by Bauer, Ursula, Debra Berg, Kohn, Melvin A., Rebecca A. Meriwether, Richard A. Nickle
Published in Public health reports (1974) (01.01.1998)

by Risher, John F., Nickle, Richard A., Amler, Sherlita N.
Published in International journal of hygiene and environmental health (01.08.2003)

by RISHER, John F, NICKLE, Richard A, AMLER, Sherlita N
Published in International journal of hygiene and environmental health (2003)

by Nickle, R A
Published in Drug and chemical toxicology (New York, N.Y. 1978) (01.01.1999)