TY  - BOOK
AU  - Engel John J.
TI  - A monograph of clasmatocolea: hepaticae 
PY  - 1980///
CY  - Illinois
PB  - Field Museum of Natural History
KW  - Clasmatocolea
KW  - Classification
KW  - Liverworts
N1  - Includes bibliographical references : (p. 198-203) and index
ER  -