@article {732,
	title = {Biological control of insect pests in Canada with special reference to the control of the European spruce sawfly Gilpinia polytoma Htg.},
	journal = {Reports of the Entomological Society of Ontario},
	volume = {70(1939)},
	year = {1940},
	pages = {51-56},
	author = {Baird, A.B.}
}
