TY  - BOOK
AU  - O. Wilford Olsen
TI  - Animal parasites : Their life cycles and ecology. Ed 3
SN  - 0-8391-0643-3
U1  - 591.233 
PY  - 1974///
CY  - Baltinore
PB  - University Park Press
N1  - O. Wilford Olsen: Animal parasites : Their life cycles and ecology. Ed 3.  (3rd Edition)  Baltinore.  University Park Press, 1974. 0-8391-0643-3--(591.233OLS)
ER  -