Segal, Dorothy B.  <br/><br/>
Index-catalogue of medical and veterinary zoology. Supplement 17, part 4, Parasite-subject catalogue, Parasites: Nematoda and Acanthocephala  
Dorothy B. Segal; Judith M. Humphrey; United States Department of Agriculture. 
 - Supplement 17, part 4, Parasite-subject catalogue, Parasites: Nematoda and Acanthocephala  
 - Washington :   U.S. Government printing Office,   1969.