TY  - BOOK
AU  - Hagerup,Olaf
AU  - Petersson,Vagn
TI  - A Botanical atlas
U1  - 581 BOT 1 
PY  - 1956///.
CY  - Copenhagen : 
PB  - Ejnar Munksgaard, 
KW  - Denmark
KW  - Cryptogams
KW  - Plants
KW  - Angiosperms
N1  - Mosser. Ferns conifers Horsetails Lycopods Phylogeny
ER  -