Calenga N.A. Aphelinus mali half blood aphid parasite and its use in the USSR. In Russian /Telenga N.A. Parazit krovyanoy tli Aphelinus mali hald i ego primenenie v SSSR. A series of works on plant protection. 1 series of 16 M..- L. Publishing House of the All-Union Academy of Agricultural Sciences named after V.I. Lenin 1935. 58 p.. Please contact us for details on condition of available copies of the book. SKUalb8f30f5fd04294455