"Perfect cooperation": Taking the campaign against the spruce budworm in Ontario to new heights, 1927-29.

Autor:	Kuhlberg, Mark
Předmět:	SPRUCE budworm CONTROL of plant parasites FOREST management FORESTS & forestry AERIAL spraying & dusting in forestry FOREST policy HISTORY
Zdroj:	Forestry Chronicle; May/Jun2014, Vol. 90 Issue 3, p296-300, 5p
Databáze:	Supplemental Index
Externí odkaz:	Zobrazit plný text záznamu