TY  - BOOK
AU  - Koopowitz, Harold.
AU  -  Kaye ; Hilary.
AU  - Knees,  Sabina..
ED  -  
TI  - plant extinction : : a global crisis 
SN  - 0747018065
U1  - 581 22
PY  - 1990///
CY  - London
PB  - Christopher Helm, 
KW  - Plants -- Extinction.
KW  -     Botany, Economic.
KW  - Botany
N1  - A historical overview of plant legislation, conservation, and preservation; Includes index
ER  -