Genesis of the Hymenoptera and the phases of their evolution /
Richards, Owain Westmacott,1901-1984.
UvarovSir, Boris.
London Methuen
1968
Originally published as 'Stanovlenie pereponchato- krylykh i fazy ikh evoliutsii'. Moscow: Izdatelstvo 'Nauka', 1966
bibl p287-304
Hymenoptera.
Evolution.