Roberts, Larry S.,  1935- <br/><br/>
Gerald D. Schmidt & Larry S. Roberts' foundations of parasitology / 
 Gerald D. Schmidt and Larry S. Roberts' foundations of parasitology 
Larry S. Roberts, John Janovy, Jr. 
 - 7th ed. 
 - Boston :  McGraw-Hill,  2005. 
 - xvii, 702 p. :  ill. ;  29 cm.