TY  - BOOK
AU  - Dasmann,R.F.
TI  - Syst.for defining & classifying natur.reg.for purposes of conservation
PY  - 1973///
PB  - Morges,Int.Union for Conserv.of Nature & Natur.Resourc.,IUCN Occasional Paper N°7,V+47pp.
ER  -