Recognition of air Pollution injury to vegetation :
Recognition of air Pollution injury to vegetation : pictorial atlas
- Pennsylvania: Air Pollution Control Association, 1970
- ca 80 p. : il.
Incluuye bibliografía
PLAGAS AGRICOLAS
ARBOLES--ENFERMEDADES Y PLAGAS
632.19 / R311
Incluuye bibliografía
PLAGAS AGRICOLAS
ARBOLES--ENFERMEDADES Y PLAGAS
632.19 / R311