TY  - BOOK
AU  - Friis, Else Marie  .
TI  - Early flowers and angiosperm evolution / 
SN  - 978-0-521-59283-3
U1  - I5 
PY  - 2011///
CY  - Cambridge : 
PB  - Cambridge University Press , 
KW  - Angiosperms-Evolution
ER  -