TY  - BOOK
AU  - Paulsrud,Per
TI  - The nostoc sysmbiout of lichens : : deversity, specificity and cellular modifications
SN  - 91-554-5136-5
AV  - PAM QK581.P8 
PY  - 2001///
CY  - Uppsala
PB  - Acta Universitatis Upsaliensis
KW  - Lichens
ER  -