February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.

Excerpt from Oceanography of the Mid-Atlantic Bight in Support of Icnaf: September-December 1967 Using data from various sources, Bigelow (1933) gave a description of the temperature cycle for the mid-atlantic Bight waters. Sur face cooling and intense mixing of the vertical column occur over the shelf during the winter months. Shelf water temperatures reach a minimum during February and March. This minimum is followed by vernal warming oc curring more rapidly inshore and at the sur face. A thermocline of increasing steepness is developed as the warming season progresses. The thermocline is steepest in mid-september, after which autumnal cooling begins and the cycle is repeated. Daily water temperature and salinity at 13 locations along the Atlantic sea board were tabulated for 1966 and 1967 by Chase' The temperature cycles are depicted graphically in an atlas of monthlysea temperatures from the Florida Keys to Cape Cod (walford and Wickland. 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.

Beginning with 1953, entries for Motion pictures and filmstrips, Music and phonorecords form separate parts of the Library of Congress catalogue. Entries for Maps and atlases were issued separately 1953-1955.

Includes entries for maps and atlases.