TY  - BOOK
AU  - David A. Jones
AU  -  Dennis A. Wilkins, 
TI  - Variation and adaptation in plant species
SN  - 0-435-61980-0
U1  - 581.52 
PY  - 1971///
CY  - London
PB  - Heinemann Educational Books Limited
N1  - David A. Jones & Dennis A. Wilkins: Variation and adaptation in plant species.  London.  Heinemann Educational Books Limited, 1971. 0-435-61980-0--(581.52JON)
ER  -