Cretaceous-Tertiary Boundary in New jersey Delaware, and Eastern Maryland / 
By James P. Minard ... [et al.]. 
 -- Washington :   United States Government Printing Office,   1969 
 - 33 p. -- 
 (Geological Survey Bulletin  ;  1274-H).
<br/><br/> Fecha real de registro 14-06-1969 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cretacico<br/>Estratigrafía
<br/><br/><label>Universal Decimal Class. No.: </label>551.763