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	1.	Age related resistance to avian leukosis virus. III. Infectious virus, neutralising antibody and tumours in chickens inoculated at various ages. [electronic resource] by Maas, H J De Boer, G F Groenendal, J E Producer: 20080917 In: Avian pathology : journal of the W.V.P.A vol. 11 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	[Comparative results of partial and total Marek's disease vaccination in broiler breeder flocks (author's transl)]. [electronic resource] by Maas, H J Rispens, B H Antonisse, H W Groenendal, J E Producer: 19740821 In: Tijdschrift voor diergeneeskunde vol. 98 Availability: No items available. Save to lists Add to cart (remove)
	3.	Age-related resistance to avian leukosis virus. I. Influence of age at exposure on mortality and congenital transmission. [electronic resource] by Maas, H J Rispens, B H Groenendal, J E Van Vloten, J Producer: 20080915 In: Avian pathology : journal of the W.V.P.A vol. 9 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Horizontal transmission of lymphoid leukosis virus. Influence of age, maternal antibodies and degree of contact exposure. [electronic resource] by de Boer, G F Maas, H J van Vloten, J Groenendal, J E Producer: 20080915 In: Avian pathology : journal of the W.V.P.A vol. 10 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	On epizootiology and control of lymphoid leukosis in chickens. [electronic resource] by de Boer, G F van Vloten, J Groenendal, J E Maas, H J Hoogerbrugge, A Producer: 19800324 In: Comparative immunology, microbiology and infectious diseases vol. 1 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	6.	On epizootiology and control of lymphoid leukosis in chickens. [electronic resource] by de Boer, G F van Vloten, J Groenendal, J E Maas, H J Hoogerbrugge, A Producer: 19800324 In: Comparative immunology, microbiology and infectious diseases vol. 1 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	7.	Protective efficacy of Marek's disease virus (MDV) CVI-988 CEF65 clone C against challenge infection with three very virulent MDV strains. [electronic resource] by de Boer, G F Groenendal, J E Boerrigter, H M Kok, G L Pol, J M Producer: 19860818 In: Avian diseases vol. 30 Availability: No items available. Save to lists Add to cart (remove)
	8.	The development of two White Plymouth Rock lines resistant to Marek's disease by breeding from survivors. [electronic resource] by Maas, H J Antonisse, H W van der Zypp, A J Groenendal, J E Kok, G L Producer: 20080915 In: Avian pathology : journal of the W.V.P.A vol. 10 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	9.	The control of lymphoid leukosis in a flock White Plymouth Rock chickens. [electronic resource] by de Boer, G F van Vloten, J Groenendal, J E Maas, H J Borm, F Hoogerbrugge, A Krasselt, M Producer: 19790425 In: Tijdschrift voor diergeneeskunde vol. 104 Availability: No items available. Save to lists Add to cart (remove)
	10.	The control of lymphoid leukosis in a flock White Plymouth Rock chickens. [electronic resource] by de Boer, G F van Vloten, J Groenendal, J E Maas, H J Borm, F Hoogerbrugge, A Krasselt, M Producer: 19790425 In: Tijdschrift voor diergeneeskunde vol. 104 Availability: No items available. Save to lists Add to cart (remove)
	11.	The control of lymphoid leukosis in a flock White Plymouth Rock chickens. [electronic resource] by de Boer, G F van Vloten, J Groenendal, J E Maas, H J Borm, F Hoogerbrugge, A Krasselt, M Producer: 20121002 In: The veterinary quarterly vol. 1 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)