TY  - BOOK
AU  - De Wit Toke
TI  - Epiphytic lichens and air pollution in the Netherlands
T2  - Bibliotheca lichenologica; 5
U1  - I270aL:558.596, L6 
PY  - 1976///
CY  - Netherlands
PB  - Vanduz Gantner Verlag       
KW  -  Lichen
KW  - Botany
ER  -