The influence of red deer (Cervus elaphus L.) upon a subalpine grassland ecosystem in the Swiss National Park [microform] /
Achermann, Gérald.
Eidgenössische Technische Hochschule Zürich.
[Zürich] : Swiss Federal Institute of Technology Zürich,
2000.
"ETH-DISS 13479"--Microfiche header.
Thesis (doctoral)--Swiss Federal Institute of Technology Zürich, 2000.
Includes bibliography.