Ward, Peter D. <br/><br/>
The Cretaceous/Tertiary extinctions in the marine realm: a 1990 perspective 

 - Boulder, CO  Geological Society of America  1990 
 - pp. 425-432  ilus. 
 - Special Paper. Geological Society of America  n.247 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>ESTRUCTURAS DE IMPACTO<br/>EXTINCION MASIVA<br/>LIMITE K-T<br/>MICROFOSILES
<br/><br/><label>Universal Decimal Class. No.: </label>56.017.4/S47|50