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	1.		Proceedings of a N.A.T.O and N.S.F advanced study institute on Genetic improvement for disease and insect resistance of forest trees, breeding pest- resistant trees held at the Pennsylvania state University, University park, Pennsylvania Aug.30 to Sep. 11, 1964 by Gerhold, H D (Ed.), Schreiner, E J, (Ed.), Mcdermott, R E (Ed.), Winieski, J A (Ed.) Material type: Text; Format: print ; Literary form: Not fiction Publication details: Paris: Symposium Publications Division, Pergamon Press, 1964 Availability: Items available for loan: National Science Library (1)Call number: 631.52:632(082.2) K6. Place hold Add to cart (remove)
	2.		Proceedings of a N.A.T.O. and N.S.F. advanced study institute on genetic improvement for disease and inset resistance of forest trees (Breeding pest-resistant trees) held at the Pennsylvania state university Aug.30 to 11 Sep. 1964 /Symposium Publications Division Pergamon by Gerhold, H D (Ed.), Schreiner, E J (Ed.), McDermott, R E (Ed.), Winieski, J A (Ed.) Material type: Text; Format: print ; Literary form: Not fiction Publication details: Paris: Symposium Publications Division Pergamon Press, 1966 Availability: No items available. Add to cart (remove)

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