TY  - BOOK
AU  - Tilson,Ronald Lewis
TI  - Monogamous mating systems of gibbons and langurs in the Mentawai Islands, Indonesia
SN  - Y910040399
PY  - 1981///
CY  - Ann Arbor, Mich.
PB  - University Microfilms International
KW  - Gibbons
KW  - Sexual behavior
KW  - Presbytis
N1  - Thesis (Ph.D.) - University of California, 1980
ER  -