Trees. Elm Dutch Elm disease appears to be widespread throughout Colorado, not just Denver. Post Jy 28, 1972 p.41 Profiteering suspected in Experimental Dutch Elm disease fungicides offered by commercial interests. Post Ag 8, 1972 p.20 Wasps to be used to help combat Dutch elm disease; they will eat larvae of elm bark beetle. RMN Ja 20, 1973 p.24 Denver could lose 12,000 elms in 1973. RMN My 29, 1973 p,5,6
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