Klett, W. 1963 La lutte biologique contre le pou de San José: Possibilités et avantages. [Biological control of San José scale: Its practicality and advantages.]. OEPP/EPPO Public. Ser. A 34(1962): 86-91.

Keywords:

biological control

Notes: Discovery, distribution, biology and efficacy of Prospaltella perniciosi, and its ability to suppress the San José scale are discussed.