Wynne-Jones, Tim.

Zoom upstream / by Tim Wynne-Jones ; pictures by Eric Beddows. - Toronto : Groundwood Books, 1993, c1992. - [34] p. : ill. ; 21 x 26 cm.

"A Meadow Mouse paperback".

ISBN: 0888991886 :

Nat. Bib. Agency Control No.: 93093945X

Dewey Class. No.: jC813/.54