Feather, Ralph M. Jr. Ortleb, Edward P. Blume, Stephen C. Aubrecht, Gordon J. II. Barefoot, Anne F. text Columbus, Ohio Merrill Publishing Company c1990 monographic x, 566 p. : figs. ; 26 cm. Ralph M. Feather, Jr. [and four others]. Includes appendices and glossary. Science 500 S416 1990 0-675-06623-9