00873na  a2200241   4500001001300000005001500013008004100028024002700069046001300096110004100109368001700150372004800167377001100215410002900226410003200255410005100287410003900338410004100377410000800418410002900426670012600455670005000581KAB20180767620201112131856181113 b aznnnaabn          fa aaa      7 a00000001195870732isni  q19500510  aNational Science Foundation (미국)  a공공기관  a과학(학문)[科學]0KSH19980108392nlsh  l영어  a미국국립과학재단  a국립과학재단 (미국)  aUnited States.b‏National Science Foundation  aNational Science Foundation (U.S.)  aAmerican national science foundation  aNSF  a美國國立科學財團  aRegional and urban development, transportation and environment, (Korea Section of the Regional Science Association), 1985  a미국국립과학재단uhttps://www.nsf.gov