ISO 3166-2:BG in the ISO 3166-2 standard published by the ISO 3166 Maintenance Agency (ISO 3166/MA). "Click on the button in the header to sort each column." The following changes to the entry have been announced by the ISO 3166/MA since the first publication of ISO 3166-2 in 1998. ISO stopped issuing newsletters in 2013. ISO 3166-2:BG ISO 3166-2:BG is the entry for Bulgaria in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1.
Briegleb BG-7 Briegleb BG-7 The Briegleb BG-7 is an American strut-braced high-wing, single seat glider that was designed by William G. Briegleb and produced by the Sailplane Corporation of America as a completed aircraft and also as a kit. The BG-7 was a development of the 1939 BG-6, with longer, semi-tapered wings of span, compared to the wing on the earlier model. The BG-7 wing is made from wood structure, with two spars and covered in doped aircraft fabric. The wing is supported by dual struts. The fuselage is made from steel tube, again with fabric covering and the tail is metal