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Elm bark beetles.

By Jones, Thomas H..
Washington, U.S. Govt. Print. Off., 1939 .
8 p. , Contribution from Bureau of Entomology and Plant Quarantine. 23 cm..

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Recherches sur le Gnomonia ulmea (Schw.) Thüm. (biologie--écologie--cytologie)

By Pomerleau, René,.
New York, | Montréal, H. G. Fiedler; | Institut botanique, Université de Montréal, 1938 .
3 p. l., [3]-139 p., 2 l. , "Extrait, avec changement de pagination, du 'Naturaliste canadien' novembre 1937 à octobre 1938." 23 cm..

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Elm-leaf beetle in New York state,

By Felt, Ephraim Porter,.
Albany, University of the state of New York, 1898 .
43 p., [6] leaves of plates. , Cover-title. | Includes index. 25 cm..

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Elm leaf beetle in New York State.

By Felt, Ephraim Porter,.
Albany : University of the State of New York, 1902 .
43 p. : , First ed. issued in 1898 as New York State Museum. Bulletin 20. 23 cm..

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