TY  - BOOK
AU  - Welch, D.S.
TI  - The cause and treatment of cavities in trees
CY  - Ithaca, N.Y.
PB  -  Cornell University
KW  - Arboles
KW  -  enfermedades
N1  - Sobretiro de: Proccedings of 25th National Shade Tree Conference, 1949
ER  -