@article {985,
	title = {Osiagniecia biologicznego zwalczania szkodnik{\'o}w w Polsce w latach 1945-1975 i perspektywy na przyzszlosc},
	journal = {Biuletyn Instytutu Ochrony Roslin},
	volume = {59},
	year = {1976},
	pages = {39-54},
	author = {Lipa, J.J.}
}
@article {903,
	title = {Conclusions from the studies of the susceptibility of Encarsia formosa Gah., a parasite of the greenhouse whitefly ( Trialeurodes vaporariorum Westw.) to pesticides used in greenhouses},
	journal = {Biuletyn Instytutu Ochrony Roslin},
	volume = {No 45},
	year = {1969},
	pages = {93-98},
	author = {Kowalska, T. and Szczepanska, K.}
}
@article {900,
	title = {The introduction of Encarsia formosa , the whitefly parasite in glasshouses in Poland},
	journal = {Biuletyn Instytutu Ochrony Roslin},
	volume = {44},
	year = {1969},
	pages = {341-352},
	author = {Kowalska, T.}
}
