TY  - BOOK
AU  - Assen,Johannes van den
TI  - Territory in the three-spined stickleback Gasterosteus Aculeatus: an experimntal study in intra-specific competition..
T2  - Suplementode Tijdschrift Behaviour
PY  - 1967///
CY  - Leiden - HOLA
PB  - E.J.Brill
ER  -