USA. Historical account of coal mining and trade unionization attempts among coal miners in pennsylvania from 1869 to 1897 - covers labour relations conflicts, wages, working conditions, political aspects, etc. Bibliography pp. 193 to 214 and statistical tables.

The content selected in Herbicides, Theory and Applications is intended to provide researchers, producers and consumers of herbicides an overview of the latest scientific achievements. Although we are dealing with many diverse and different topics, we have tried to compile this "raw material" into three major sections in search of clarity and order - Weed Control and Crop Management, Analytical Techniques of Herbicide Detection and Herbicide Toxicity and Further Applications. The editors hope that this book will continue to meet the expectations and needs of all interested in the methodology of use of herbicides, weed control as well as problems related to its use, abuse and misuse.

After November 1776, the Hackensack Valley--located in northeastern New Jersey and Rockland County, New York--lay between the invading British army in New York City and the main Continental defense forces in the Hudson Highlands. Jersey Dutch patriot and Tory troops carried on a five-year war of neighbors between the lines, while the grand armies of Britain and America maneuvered on either side of them for a chance to strike a blow at the other. Adrian Leiby offers an exciting narrative of the people of Dutch New Jersey and New York during this conflict. Historians will find colorful details about the Revolutionary War, and genealogists will find much previously unpublished material on hundreds of men and women of Dutch New Jersey and New York in the 1700s.

In 1973, on the 500th anniversary of Copernicus's birth, the Polish Academy of Sciences announced its intention to publish all of the astronomer's extant works, both in their original Latin and in modern translations. Here, available for the first time in softcover, are Edward Rosen's authoritative English translations and commentaries.