1985 - Pyroclastic Rocks (Hardcover) → Paperback, Hardcover ISBN-13: 9783540127567 ISBN-10: 3540127569 Genre: Science & Math ? Pyroclastic Rocks (Paperback) → Paperback, Hardcover ISBN-13: 9780387513416 ISBN-10: 0387513418 Genres: Science & Math, Engineering & Transportation ? |