An introduction to nematology / B. G. Chitwood & M. B. Chitwood; with contributions by R. O. Christenson [et. al.] Chitwood, B. G. Chitwood, May Belle Hutson, Nematodes. QL391.N4 C3623 1950 595.13 CHI Printed in Baltimore, Md. Includes bibliographies and index. London : University Park Press, 1950. 1950. 1950 Text 334p. : eng