ISBN 0201434229 books & textbook
Sunken Ships and Grid Patterns: 2-D Geomentry (Investigations in Number, Data and Space, Grade 4)
Douglas H. Clements Michael T. Battista Joan Akers Andee Rubin Virginia Woolley
Scott Foresman /2004T Paperback / 183 Pages
isbn-10: 0201434229 / isbn-13: 9780201434224
