· APHIDS AT WHEAT suìsilina Maneva, Dina Atanasova, Velichka Institute of agriculture —...
29
· APHIDS AT WHEAT suìsilina Maneva, Dina Atanasova, Velichka Institute of agriculture — Karnobat, Bulgaria E mail: manes a entoQìabv.þg:, vilikotevaQyahoo.eom