Köhler, Annemarie. The underwater explorer : : secrets of a blue universe / [electronic resource] / Annemarie and Danja Köhler.. — New York : : Lyons Press,, c1997.. — 160 p. : : col. ill. ; 28 cm.
"First published in 1997 by New Holland (Publishers) Ltd, London"--T.p. verso. Includes index.