TY  - BOOK
AU  - SHIMWELL, David W.
TI  - The Description and Classification of Vegetation 
T2  - Biology series
PY  - 1972///
CY  - Whashington
PB  - University of Washington Press
KW  - VEGETACION
KW  - REQUERIMIENTOS TOPOGRAFICOS
KW  - COMUNIDADES DE PLANTAS
ER  -