Multiples

From Author Wars - https://authorwars.com/books/multiples-96522.html

Overview:

Unknown. Tricks and Treats (Unknown, Bill Pronzini, Crime Club / Doubleday, ISBN-10: 0385114168, $5.95, xii+243 pages, Hardcover, Anthology)
Unknown. Tricks and Treats (Unknown, Barry N. Malzberg, Crime Club / Doubleday, ISBN-10: 0385114168, $5.95, xii+243 pages, Hardcover, Anthology)
Unknown. On Account of Darkness (Unknown, Bill Pronzini, Five Star, ISBN-10: 1594140383, $25.95, 272 pages, Hardcover, Collection)
Unknown. On Account of Darkness (Unknown, Barry N. Malzberg, Five Star, ISBN-10: 1594140383, $25.95, 272 pages, Hardcover, Collection)
Unknown. Problems Solved (Unknown, Bill Pronzini, Crippen & Landru Publishers, ISBN-10: 1885941897, $16.00, 165 pages, Trade Paperback, Collection)
Unknown. Problems Solved (Unknown, Barry N. Malzberg, Crippen & Landru Publishers, ISBN-10: 1885941897, $16.00, 165 pages, Trade Paperback, Collection)
2016 . Problems Solved (2016, Bill Pronzini, Crossroad Press, $3.99, ebook, Collection)
2016 . Problems Solved (2016, Barry N. Malzberg, Crossroad Press, $3.99, ebook, Collection)
2020 . On Account of Darkness: A Collection of Science Fiction Short Stories (2020, Bill Pronzini, Crossroad Press, $19.95, digital audio download, Collection)
2020 . On Account of Darkness: A Collection of Science Fiction Short Stories (2020, Barry N. Malzberg, Crossroad Press, $19.95, digital audio download, Collection)