TY - BOOK AU - Foust,Alan S.(Alan Shivers),1908-. TI - Principles of unit operations SN - 0471047872 PY - 1980/// CY - New York PB - John Wiley & Sons KW - Chemical processes KW - TP155.7 KW - .P74 1980 N1 - Includes bibliographical references and index ER -