1987 - Animals Without Backbones an Introduction to the Invertebrates [New Plan Texts at the University of Chicago] (Paperback) ISBN-13: 9780226078748 ISBN-10: 0226078744 Genres: Literature & Fiction, Science & Math, Engineering & Transportation ? 1987 - Animals Without Backbones (Hardcover) ISBN-13: 9780226078731 ISBN-10: 0226078736 Genre: Science & Math ? Living Invertebrates (Paperback) → Paperback ISBN-13: 9780865423305 ISBN-10: 086542330X Genre: Science & Math ? Living Invertebrates (Paperback) → Paperback ISBN-13: 9780940168992 ISBN-10: 0940168995 Genre: Science & Math ? |