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2. Impact of diseases on insects and procedures for detecting and eliminating them from cultures prior to release for biological control;Allen,1981
3. The manatee—ecology and use for weed control;Allsopp;Nature,1960
4. The biological control of weeds;Andres,1977
5. Integrating weed biological control agents into a pest-management program;Andres;Weed Science,1982