| Type |  Book |
| ชื่อเรื่อง | Key to trematodes reported in waterfowl / by Malcolm E. McDonald |
| ผู้แต่ง | Mcdonald, Malcolm edwin 1915- |
| พิมพลักษณ์ | Washington, D.C. : U.S. Dept. of the Interior, Fish and Wildlife Service : For sale by the Supt. of Docs., U.S. G.P.O., 1981 |
| รูปเล่ม | 156 p. : ill |
| หัวเรื่อง | Anatidae --Diseases --United States [] |
| | Birds --Parasites --United States [] |
| | Parasites --Birds --United States [] |
| | Platyhelminthes --United States --Identification [] |
| | Trematoda --United States --Identification [] |