Excerpt from Standard Reference Materials: A Standard Reference Material Containing Nominally Four Percent Austenite Metallographic Characterization of an nbs Spectrometric low-alloy Steel Standard, October 20 cents.* nbs Misc. Publ. 260-4, Standard Reference Materials Sources of Information on Standard Reference Materials, February 1965. 20 cents.* nbs Misc. Publ. 260 - 5, Standard Reference Materials Accuracy of Solution x-ray Spectrometric Analysis of Copper - Base Alloys, March 1965. 25 cents.* nbs Misc. Publ. 260 - 6, Standard Reference Materials Methods for the Chemical Analysis of White Cast Iron Standards, July 1965. 45 cents.* nbs Misc. Publ. 260 - 7, Standard Reference Materials Methods for the Chemical Analysis of nbs copper-base Spectrochemical Standards, October 1965. 60 cents.* nbs Misc Publ. 260 - 8, Standard Reference Materials Analysis of Uranium Concentrates at the National Bureau of Standards, December 1965. 55 cents. 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.