Acta fytotechnica et zootechnica, 4, 2001, 3

	Gustáv BUČEK Seasonal Dynamics of Deerfly (Hypoderma actaton Bauer, 1858) and Roebuckfly (Hypoderma diana Bauer, 1858) in Slovakia.... 57
	Anna TRAKOVICKÁ, Alojz KÚBEK, Július ŽITNÝ, Eva STRAPÁKOVÁ, Ivan STRÁŇAI Genetic Variability of Fishes in the Family Cyprinidae as Evaluated by Genetic Polymorphism of Blood Proteins.... 60
	Klára VAVRIŠÍNOVÁ, Peter STRAPÁK, Ondrej DEBRECÉNI, Daniel BÍRO, Marko HALO Evaluation of Milkability of Slovak Spotted Cattle.... 64
	Peter STRAPÁK, Daniel BÍRO, Marko HALO, Klára VAVRIŠÍNOVÁ, Peter JUHÁS, Ondrej DEBRECÉNI Evaluation of Selected Traits of Sire Dams of Slovak Spotted Cattle.... 68
	Natália FARAGOVÁ, Martin UŽÍK, Pavol HAUPTVOGEL Low pH Tolerance and Symbiotic Effectiveness of Sinorhizobium Meliloti.... 73
	Václav HEJNÁK, Hans LIPPOLD, František HNILIČKA, Vratislav NOVÁK The Nitrogen Utilization by Spring Barley and the Balance of Nitrogen Fertilizer.... 76
	Peter ONDRIŠÍK, Soňa JAVOREKOVÁ Content of Inorganic Nitrogen in Soil under Monoculture of Maize depending on Different Tillage and Fertilization.... 80
	Ľudovít CAGÁŇ, Eva KOMÁROMYOVÁ, Marek BARTA, Peter TÓTH Cuscuta lupuliformis Krocker (Cuscutaceae) - a new Host for Bean Aphid, Aphis fabae Scopolo (Homoptera, Aphididae)....84