TY  - BOOK
AU  - Hedgcock,George G.
AU  - Long,W.H.
TI  - A disease of pines caused by Cronartium pyriforme
T2  - Bulletin / United States Department of Agriculture
AV  - S21 .A7 no. 247
PY  - 1915///
CY  - Washington, D.C.
PB  - U.S. Dept. of Agriculture
KW  - Pine
KW  - Diseases and pests
N1  - Caption title; Contribution from the Bureau of Plant Industry; "Professional paper."; Bibliography: p. 20
ER  -