@article {443,
	title = {Potential for increased use of biological control agents in Massachusetts apple orchards. (In: Opportunities for increased use of biological control in Massachusetts.)},
	journal = {Research Bulletin, Massachusetts Agricultural Experiment Station},
	volume = {No 718},
	year = {1987},
	pages = {Jun-21},
	author = {Driesche, R.G. van and Prokopy, R.J. and Coli, W.M.}
}
@article {444,
	title = {Potential for increased use of biological control agents against greenhouse pests in Massachusetts},
	journal = {Research Bulletin, Massachusetts Agricultural Experiment Station},
	volume = {No 718},
	year = {1987},
	pages = {88-111},
	author = {Driesche, R.G. van and Vittum, P.}
}
