2005 The 100th Anniversary of the Birth of Hydrogeologist G. V. Bogomolov (1905-1981)
2005 The 100th Anniversary of the Birth of Hydrogeologist G. V. Bogomolov (1905-1981)
Europe
2004 The 150th Anniversary of the Birth of Yehuda Pen
2004 The 150th Anniversary of the Birth of Yehuda Pen