Some issues for <1978-> accompanied by supplementary material on microfiche.
Reproduction Note
Microfiche. [Washington, D.C], American Chemical Society, [19__]- microfiches : negative ; 11 x 15 cm.
Action Note
committed to retain 2009 PALCI Distributed Print Archive. This title is included in a commitment to archive specified science journals in print format as a back-up for their online availability. Holdings located at University Park are not to be withdrawn.