The sterility effect of halo propanediol derivative to the male Brandt[WT4"BZ]’[WT4"HZ]s voles The potential effects of UV-radiation on plant diseases Effect of Dose Rate on UV-Irradiation Induced Damage to Erythrocyte and Erythrocyte Membrane Effect of UV-B for Different Radiation Durations on Biological Characteristics of Two Color Morphs of Pea Aphid Acyrthosiphon pisum (Harris) Offspring