Treaties and other international acts series. * Paper, $15.00 a yr. (approximately 150 issues), $7.00 additional for foreign mailing; single copies vary in price. 6956. Embassy sites, agreement between United States of American and Union of Soviet Socialist Republics, extending certain deadlines specified in agreement of May 16, 1969, effected by exchange of notes, dated Moscow, Sept. 8 and 10, 1970; [entered into force Dec. 10, 1970].