00337nam a2200109Ia 4500008004100000082001900041245009500060260002700155650001300182650001600195700001600211220204s9999 xx 000 0 und d a575(06)bGEE.1 0aGenetics today: Proceedings of the XI International Congress of genetics.Hague. 1963. V 1. aOxfordbPergamonc1963 aGenetics aMutagenesis aGEERTS, S J