Brower, L P <br/><br/>
Variation in cardiac glycoside content of monarch butterflies from natural populations in eastern North America.  [electronic resource] 

 -  Science (New York, N.Y.)  Aug 1972 
 - 426-8 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.177.4047.426  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Analysis of Variance<br/>Animals<br/>Birds<br/>Cardiac Glycosides--analysis<br/>Ecology<br/>Emetics--pharmacology<br/>Female<br/>Genetic Variation<br/>Geography<br/>Homing Behavior<br/>Insecta--analysis<br/>Male<br/>North America<br/>Seasons<br/>Sex Factors<br/>Spectrophotometry<br/>Statistics as Topic<br/>Vomiting--drug therapy