TY  - BOOK
AU  - Esser, Karl.
TI  - Texbook and practical guide cryptogams ; cyancbacteria, algae, fungi, lichens
T2  - Texbook and practical guide
U1  - 586 
PY  - 1982///
CY  - London
PB  - Cambridge University
KW  - Criptógamas
ER  -