Used availability for Isaac Asimov's How Did We Find Out About Our Human Roots?
Hardback Editions
June 1979 : USA Library Binding

Title: How Did We Find Out About Our Human Roots? (How Did We Find Out Series)
Author(s): Isaac Asimov, David Wool
ISBN: 0-8027-6361-8 / 978-0-8027-6361-7 (USA edition)
Publisher: Walker & Co
Availability:
Amazon Amazon UK Amazon CA January 1979 : USA Hardback

Title: How did we find out about our human roots? (How did we find out ... series)
Author(s): Isaac Asimov
ISBN: 0-8027-6360-X / 978-0-8027-6360-0 (USA edition)
Publisher: Walker
Availability:
Amazon Amazon UK Amazon CA Paperback Editions
July 1982 : USA Paperback

Title: How Did We Find Out About Our Human Root?
Author(s): Isaac Asimov
ISBN: 0-380-59600-8 / 978-0-380-59600-3 (USA edition)
Publisher: Avon Books
Availability:
Amazon Amazon UK Amazon CA