Becker, W. B. 1955a. Seasonal control of Dutch elm disease and insect pests of elms in Massachusetts (With cooperation of M A McKenzie, A I Bourne, and W B Whitcomb). Trees Magazine 168-9, 18-19.
Becker 1955
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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