Child,C. Allan. <br/><br/>
Shallow-water pycnogonida of the Isthmus of Panama and the coasts of Middle America/ 
C. Allan Child. 
 - City of Washington:  Smithsonian Institution Press,  1979. 
 - 86 p. :  ill.;  27cm. 
 - Smithsonian contributions to zoology  no.293. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pycnogonida--Panama--Classification.<br/>Pycnogonida--Central America--Classification.