TY  - BOOK
AU  - Peter  H. Raven
AU  -  Helena Curtis, 
TI  - Biology of plant
U1  - 581 
PY  - 1971///
CY  - Newyork
PB  - Worth Publishers Inc
N1  - Peter  H. Raven & Helena Curtis: Biology of plant.  Newyork.  Worth Publishers Inc, 1971.--(581RAV)
ER  -