Vasseur, R., Schvester, D., & Bianchi, H. 1957 Observations sur les traitements en cours de végétation contre le pou de San José (Quadraspidiotus perniciosus Comst.). [Observations on the treatments on vegetation against the San José scale (Quadraspidiotus perniciosus Comst.)].. Annales des Epiphyties 8: 101-110.

Notes: This project examines the effectiveness of seven summer chemical treatments against San José scale.