Platform, its occurrence and development

Jefson, HenryPlatform, its occurrence and development: (History of the Publ. Ringings in England) / Op.Henry Jeffson;Per.with EnglishN.N.Mordvinova, ed.prof.V.F.Drejzhinsky.T. 1-2.- St. Petersburg: Type.M. Akinfieva and I. Leontiev.-2 t .;21 cm. -.I. Mordvinova, N.N. II.Dryryzhinsky, Vladimir Fedorovich (1861-1920) .1People (collection).Electronic Source: PBOriginal Storage Place: SPbSU