TY  - BOOK
AU  - Simpson,George Gaylord
TI  - Horses: the story of the horse family in the modern world and through sixty million years of history 
PY  - 1951///
CY  - New York
PB  - Oxford University Press
KW  - Horses
KW  - History
KW  - Horses, Fossil
KW  - Mammals
KW  - Evolution
N1  - p. 232-236
ER  -