Excerpt from Intra-Industry Profitability Differences in U. S. Manufacturing, 1953-1983 The data employed in this study and the methods used to analyze them are discussed in the next Section. As that discussion attempts to indicate, my orientation here is exploratory and descriptive. I attempt to draw a rough map of some unexplored territory, in part to see if it might be interesting for others to return, not to do definitive cartography or to test structural hypotheses. The results obtained are reported in Sections 3 and 4. The suggest that further exploration of this territory would indeed be worthwhile. Section 3 summarizes the annual estimates of the average profitability advantage of large firms. These estimates provide strong evidence that intra-industry profitability relations have in fact changed systematically. 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.