TY  - BOOK
AU  - Imlay,Ralph W.
TI  - Stratigraphic distribution and zonation of Jurassic (Callovian) ammonites in southern Alaska
U1  - 564.5 
PY  - 1975///.
CY  - Washington: 
PB  - United States Government Printing Office, 
KW  - Geology, Stratigraphic
KW  - Jurassic
KW  - Ammonoidea
KW  - Alaska
KW  - Geology
N1  - Includes bibliographical references (p. 25-26) and index (p. 27-28)
N2  - Studies of callovian ammonites from southern Alaska provide correlations with lower and middle callovian ammonite zones of Europe
ER  -