  2012 - Porcupines the Animal Answer Guide [The Animal Answer Guides: Q&A for the Curious Naturalist] (Paperback) ISBN-13: 9781421407364 ISBN-10: 1421407361 Genres: Reference, Science & Math ?  1989 - The North American Porcupine [Smithsonian Nature Books Series, No. 8] (Hardcover) → Paperback ISBN-13: 9780874747867 ISBN-10: 0874747864 Genre: Science & Math 1   The North American Porcupine (Hardcover) ISBN-13: 9780801446467 ISBN-10: 0801446465 Genres: Science & Math, Engineering & Transportation ? |
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