Book excerpt: Excerpt from Nbs Standard Reference Materials Catalog, 1981-83 Edition This Catalog lists those Standard Reference Materials Research Materials and Special Reference Materials (cm' 8) that are available from the National Bureau of Standards (nbs), and those that are soon to be available. The Catalog describes these materials as to their certified characterization, unit size, and type, as well as providing-ordering information. Prices for these materials are listed separately in annual supplements to this Catalog. Key words: Analysis; characterization; composition; properties; Standard Reference Materials: Research Materials; materials. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.