TY  - BOOK
AU  - Smith,James Perrin
TI  - The middle Triassic marine invertebrate faunas of North America,
T2  - U. S.  Geological Survey.  Professional paper 83
AV  - QE75 .P9 no. 83
U1  - 200 no.83 s 
PY  - 1914///
CY  - Washington
PB  - Govt. Print. Off.
KW  - Paleontology
KW  - Triassic
KW  - North America
N1  - Issued also as House Doc. 587, 63d Cong., 2d sess; Plates printed on both sides of leaves; Includes index; Bibliography: p. 20-23
ER  -