Smalltalk-80: The Language and its Implementation
ISBN: 0201113716
Buy on Amazon
Found in 1 comment on Hacker News
pg · 2007-06-17 · Original thread
More than a few years. This was the book that got everyone interested in OOP:

http://www.amazon.com/dp/0201113716

As the name suggests, the language it describes was developed in 1980.

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