Citation: Dw. Ross et al., OPTIMAL DOSE OF AN ANTIAGGREGATION PHEROMONE (3-METHYLCYCLOHEX-2-EN-1-ONE) FOR PROTECTING LIVE DOUGLAS-FIR FROM ATTACK BY DENDROCTONUS-PSEUDOTSUGAE (COLEOPTERA, SCOLYTIDAE), Journal of economic entomology, 89(5), 1996, pp. 1204-1207