TY  - BOOK
AU  - Zimmermann, Martin Huldrych.
TI  - How sap moves in trees
T2  - Scientific American Offprints
PY  - 1963///
CY  - San Francisco
PB  - Freeman
KW  - Savia
KW  - Circulación
N1  - "Reprinted from Scientific American, March 1963"
ER  -