Louis F. Sytsma

ASTM standards on environmental sampling, 2nd ed. ASTM (American Society For Testing and Materials), ASTM, west Conshohocken, PA, (1997), 1010 Pages, [ISBN No.:0‐8031‐1835‐X], U.S. List Price: $99.00

Louis F. Sytsma, L. Sytsma, 1999 .