RT Book, Whole SR Print DC OPAC T1 The United States and Bulgaria in World War I / Petko M. Petkov. T2 East European monographs A1 Petkov, Petko M. YR 1991 FD 1991. SP vi, 252 p. K1 Eastern question (Balkan) K1 World War, 1914-1918 PB East European Monographs PP Boulder SN 0880332034 LA English (英語) CL NDC:209.7 NO 書誌ID=1200054824; LK [OPAC]http://opac.lib.hosei.ac.jp/opac/opac_link/bibid/1200054824 LK [Webcat Plus]http://webcatplus-equal.nii.ac.jp/libportal/EqualFromForm?txt_isbn=0880332034 OL 30