Authors: HANSEN RW RICHARD RD PARKER PE WENDEL LE

Citation: Rw. Hansen et al., DISTRIBUTION OF BIOLOGICAL-CONTROL AGENTS OF LEAFY SPURGE (EUPHORBIA-ESULA L.) IN THE UNITED-STATES - 1988-1996, Biological control, 10(2), 1997, pp. 129-142

Authors: LANG RF RICHARD RD HANSEN RW

Citation: Rf. Lang et al., UROPHORA AFFINIS AND U-QUADRIFASCIATA (DIPTERA, TEPHRITIDAE) RELEASEDAND MONITORED BY USDA, APHIS, PPQ AS BIOLOGICAL-CONTROL AGENTS OF SPOTTED AND DIFFUSE KNAPWEED, Great Lakes entomologist, 30(3), 1997, pp. 105-113