Roberts, Ronald J. creator Shepherd, C.Jonathan text England Fishing News Books Ltd c1986 2nd ed. monographic 222 p, : Plates (10) ill., [by] Ronald J. Roberts and C.Jonathan Shepherd Includes bibliographical references and index Trout and Salmon Diseases Handbook SH179 .S28 1986 0852381387 UOEL 000 20150515114534.0