Thực đơn
Gerhard_RitterThực đơn
Gerhard_RitterLiên quan
Tài liệu tham khảo
WikiPedia: Gerhard_Ritter http://aleph.nkp.cz/F/?func=find-c&local_base=aut&... http://catalogo.bne.es/uhtbin/authoritybrowse.cgi?... http://catalogue.bnf.fr/ark:/12148/cb12461805j http://data.bnf.fr/ark:/12148/cb12461805j http://www.idref.fr/033791031 http://id.loc.gov/authorities/names/n79096963 http://d-nb.info/gnd/11874545X http://opac.sbn.it/opacsbn/opac/iccu/scheda_author... http://id.ndl.go.jp/auth/ndlna/00454291 http://isni-url.oclc.nl/isni/0000000121342446