Wincor, Richard; Mandel, Irving; Sloan, Irving. (1980). Copyright, patents and trademarks :the protection of intellectual and industrial propertyby Richard Wincor and Irving Mandell ; general editor Irving J. Sloan. Dobbs Ferry, New York :: Oceana,.
Wincor, Richard; Mandel, Irving; Sloan, Irving. Copyright, patents and trademarks :the protection of intellectual and industrial propertyby Richard Wincor and Irving Mandell ; general editor Irving J. Sloan. Dobbs Ferry, New York :: Oceana,, 1980
Wincor, Richard; Mandel, Irving; Sloan, Irving. Copyright, patents and trademarks :the protection of intellectual and industrial propertyby Richard Wincor and Irving Mandell ; general editor Irving J. Sloan. Dobbs Ferry, New York :: Oceana,, 1980.