Duration of the developmental stages of house dust mites D. farinae and D. pteronyssinus under controlled conditions to pave the way in front of the workers in the field of house-dust mite asthmatic bronchitis. 3--Larval duration. - Gamal-Eddin FM; Shehata KK; Abou-Sinn FM; Tayel SE; Aboul-Atta AM; El-Ahmedaawy BA; Fayed MA; Hafez AH; Imam MH (Journal of the Egyptian Society of Parasitology, 1983)