@base . a ; . a , ; "United States Naval Observatory circular" . a . a , , ; , , ; "United States Naval Observatory circular." ; ; ; "0097-0336" ; ; "0097-0336" ; ; "0097-0336" ; "United States Naval Observatory circular." , "United States Naval Observatory circular" ; ; [ a ; "c.1 no.172-177; c.1 no.168-170; c.1 no.166-167 &suppl.; c.1 no.164-165; c.1 no.153-162; c.1 no.149-152; c.1 no.140-148; c.1 no.130-139; c.1 no.120-129; c.1 no.107-119; c.1 no.106; c.1 no.101-105; c.1 no.99-100; c.1 no.95-98; c.1 no.80-94; c.1 no.53-79; c.1 no.44-51; c.1 no.29-41; c.1 no.1-22,24-27; NO1-60; NO61-100; NO126-150INDEX NO101-150; NO151-160; NO161-170; NO171-174; no.151-175; no.116-139 1968-72; no.121-150" ; "Preserved" ; "2024-03-01"^^ ; "c.1 no.172-177; c.1 no.168-170; c.1 no.166-167 &suppl.; c.1 no.164-165; c.1 no.153-162; c.1 no.149-152; c.1 no.140-148; c.1 no.130-139; c.1 no.120-129; c.1 no.107-119; c.1 no.106; c.1 no.101-105; c.1 no.99-100; c.1 no.95-98; c.1 no.80-94; c.1 no.53-79; c.1 no.44-51; c.1 no.29-41; c.1 no.1-22,24-27; NO1-60; NO61-100; NO126-150INDEX NO101-150; NO151-160; NO161-170; NO171-174; no.151-175; no.116-139 1968-72; no.121-150" ; ; [ "0097-0336" ; "United States Naval Observatory circular." ; "The Observatory, [1949-" ] ; "1968/1968" ; "https://catalog.hathitrust.org/Record/006256504" ] . . a ; "0097-0336" ; . a ; "0097-0336" ; . "District of Columbia" . a ; ; "20050916125600.0"^^ ; ; . a ; "hathi" ; "HathiTrust" .