TY  - GEN
AU  - McDonald, Malcolm Edwin
AU  - 
ED  - United States.
TI  - Key to trematodes reported in waterfowl / Malcolm Edwin McDonald
T2  - Resource publication / United States Department of the Interior, Fish and Wildlife Service
U1  - US 333.9540973  23rd ed.
PY  - 1981///
CY  - Washington
PB  - U.S. Department of the Interior
KW  - Trematode
KW  - Identification
KW  - Waterfowl
KW  - Diseases
KW  - Anatidae
KW  -  Birds
KW  - Parasites
KW  - Platyhelminthes
N1  - Index2
ER  -