Hulda Regehr Clark
Alan Mozley
United States. Agricultural Research Service
Govard Bidloo
Jared G. Smith
Eric Panitz
David Jerome Wall
Banchob Sripa
M. Francis
E. M. Pantelouris
Joseph Terry Sawma
Unknown Author
Don Rex Morrill
United States. Agricultural Research Service. Animal Disease and Parasite Research Division
Leberegel-Symposion Zwischenahn 1971.
Walborg Thorsell
Horace Wesley Stunkard
Klaus Odening
International Liverfluke Colloquium, 2d, Agricultural University of Wageningen, 1967