Tomasec, Ivo. Treatment of honey bee Nosema with sulfonamides - Washington : EUA. Department of Agriculture, 1973 - 5 p. - TT 71-56101 . - TT 71-56101 . LCCN: 48142 Subjects--Topical Terms: Abejas--Enfermedades.Nosema apis.Sulfonamidas.