Thorne, Gerald. Principles of nematology. - New York McGraw-Hill 1961. - 553 p. illus. 24 cm. - McGraw-Hill publications in the agricultural sciences . Includes bibliography. LCCN: 60053223 /L Subjects--Topical Terms: Nematode diseases of plants. LC Class. No.: SB998.N4 / T45 Dewey Class. No.: 632.6513