TY  - BOOK
AU  - Nievergelt, B.
TI  - Ibexes in an African Environment: Ecology and Social System of the walia Ibex in the Simen Mountains, Ethiopia
SN  - 3540105921
U1  - 599.7358 
PY  - 1981///
CY  - Berlin, Heidelberg
PB  - Springer-Verlag
ER  -