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<p>It seems that there are multiple versions of “Structure and Interpretation of Computer Programs” out there. Which version/ISBN is the correct one?</p>

<p>ISBN: 0070004846
[Structure</a> and Interpretation of Computer Programs, MH-Mit Press Series, Harold Abelson, Book - Barnes & Noble](<a href=“Online Bookstore: Books, NOOK ebooks, Music, Movies & Toys | Barnes & Noble®”>Online Bookstore: Books, NOOK ebooks, Music, Movies & Toys | Barnes & Noble®)
[Amazon.com:</a> Structure and Interpretation of Computer Programs, Second Edition (9780070004849): Harold Abelson, Gerald Jay Sussman, Julie Sussman: Books](<a href=“http://www.amazon.com/Structure-Interpretation-Computer-Programs-Second/dp/0070004846]Amazon.com:”>http://www.amazon.com/Structure-Interpretation-Computer-Programs-Second/dp/0070004846)
[Structure</a> and Interpretation of Computer Programs - Borders - Books, Music and Movies](<a href=“Barnes & Noble Welcomes Borders® Bookstore Customers | Barnes & Noble®”>Barnes & Noble Welcomes Borders® Bookstore Customers | Barnes & Noble®)</p>

<p>ISBN: 0262011530
[Amazon.com:</a> Structure and Interpretation of Computer Programs - 2nd Edition (MIT Electrical Engineering and Computer Science) (9780262011532): Harold Abelson, Gerald Jay Sussman: Books](<a href=“http://www.amazon.com/Structure-Interpretation-Computer-Programs-Engineering/dp/0262011530/ref=pd_bxgy_b_img_b]Amazon.com:”>http://www.amazon.com/Structure-Interpretation-Computer-Programs-Engineering/dp/0262011530/ref=pd_bxgy_b_img_b)
[Structure</a> and Interpretation of Computer Programs, 2nd Edition, MIT Electrical Engineering and Computer Science Series, Harold Abelson, Book - Barnes & Noble](<a href=“Online Bookstore: Books, NOOK ebooks, Music, Movies & Toys | Barnes & Noble®”>Online Bookstore: Books, NOOK ebooks, Music, Movies & Toys | Barnes & Noble®)
[Structure</a> and Interpretation of Computer Programs - Borders - Books, Music and Movies](<a href=“Barnes & Noble Welcomes Borders® Bookstore Customers | Barnes & Noble®”>Barnes & Noble Welcomes Borders® Bookstore Customers | Barnes & Noble®)</p>

<p>All of the Second Editions are the same, but you really don’t need to shell out anything. The full text including the HW problems is freely available at [Structure</a> and Interpretation of Computer Programs](<a href=“http://mitpress.mit.edu/sicp/full-text/book/book.html]Structure”>http://mitpress.mit.edu/sicp/full-text/book/book.html)</p>

<p>Now do you wanna buy me dinner? ;P</p>

<p>@bsd Mad props, on the ebook and on the screen name. ;)</p>