TY  - BOOK
AU  - Wallis,R.L.
TI  - Ecological studies on the potato psyllid as a pest of potatoes
T2  - Technical bulletin / United States Department of Agriculture
AV  - S21 .A72 no. 1107
PY  - 1955///
CY  - Washington
PB  - U.S. Dept. of Agriculture
KW  - Jumping plant-lice
KW  - Potatoes
KW  - Diseases and pests
N1  - Caption title; Literature cited: p. [25]
ER  -