Goodreads Librarians Group discussion
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Differentiate two different books
date
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Vol 2 was published in both 1972 & 1973 according to Worldcat.
https://www.goodreads.com/book/show/7...
https://www.goodreads.com/book/show/7...
https://www.goodreads.com/book/show/7...
and
https://www.goodreads.com/book/show/7...
are listed as if they are two different editions of the same book. Actually, they are volume one and volume two of a single book, published separately, so should have separate entries; they should not be cross-referenced with each other as alternate editions of the same book.
Also, for volume 2, the publication date is listed as 1973. According to the copyright page of my copy, though, it was first published in that form in July 1972.