Nicholson, Edward Max Handbook to the Conservation Section of the International Biological Programme / compiled by E. M. Nicholson. - London : Conservation of Terrestrial Biological Communities, 1 968. - xi, 84 p. ; 21 cm. - IBP Handbook ; no. 5 . Includes bibliographical references Subjects--Corporate Names: International Biological Programme.-------- Subjects--Topical Terms: Nature conservation --Research.------ Dewey Class. No.: 333.9 NIC