Christiansen, Kenneth A.  1924-2017 <br/><br/>
The genus Pseudosinella in Mesoamerican caves / 
Kenneth Christiansen. 
 -- Austin :   Association for Mexican Cave Studies,   19? 
 - P. 129-134 
<br/><br/> Separata de : Association for Mexican Cave Studies Bulletin. Vol. 5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Colémbolos<br/>Entomología<br/>Insectos
<br/><br/><label>Universal Decimal Class. No.: </label>595.7