TY  - BOOK
AU  - Hatcher,J.B.
AU  - Lull,Richard Swann
AU  - Osborn,Henry Fairfield
AU  - Marsh,Othniel Charles
TI  - The Ceratopsia,
T2  - United States. Geological Survey. Monographs,
AV  - QE75 .M7 vol. 49
PY  - 1907///
CY  - Washington
PB  - Govt. Print. Off.
KW  - Ceratopsia
N1  - Bibliography: p. 196-198
ER  -