Excerpt from Publications of the National Bureau of Standards July 1, 1957, to June 30, 1960: Includes Titles of Papers Published in Outside Journals, 1950 to 1959 Foreign money, defaced or smooth coins, will not be accepted. Do not send postage stamps. The letter symbol with each publication num ber and the full title of the publication must be given when ordering. If 100 copies or more of any publication are ordered, a discount of 25 percent is allowed. 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.