McDonald, Malcolm Edwin  1951 <br/><br/>
Key to trematodes reported in waterfowl / Malcolm Edwin McDonald 

 - Washington :  U.S. Department of the Interior ;  1981 
 - 156p. :  chart ;  26 cm. 
 - Resource publication / United States Department of the Interior, Fish and Wildlife Service ;  142 .
<br/><br/>Index2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trematode --Identification.<br/>Waterfowl--Diseases.<br/>Anatidae --Diseases.<br/> Birds --Parasites.<br/>Platyhelminthes --Identification.
<br/><br/><label>Dewey Class. No.: </label>US 333.9540973   / M 292(no.142/1981)