This pair of friends introduces readers to ub-sound words, including rub, club, and tub.
- ISBN10 0606016163
- ISBN13 9780606016162
- Publish Date 1 May 1992 (first published 24 April 1992)
- Publish Status Out of Print
- Out of Print 22 September 2010
- Publish Country US
- Imprint Turtleback Books
- Edition Turtleback School & Library ed.
- Format Hardcover (Library Binding)
- Pages 24
- Language English