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740: Uninfected elm wood as a source of the bark beetle (Scolytus multistratus Marsham) carryig the dutch elm disease pathogen

740: Uninfected elm wood as a source of the bark beetle...

Collins, Donald L.

Cornell university, 1940

monografia | Testo

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841: Long treatments for bark beetle control in connection with the dutch elm disease

841: Long treatments for bark beetle control in...

Connola, Donald P.

Cornell university, 1947

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L' Ulmus pumila e la grafiosi

L' Ulmus pumila e la grafiosi

Sibilia, Cesare

tip. Mariano Ricci, 1940

monografia | Testo

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