00464nam a22001337a 4500008004100000020001800041040005500059080001500114245009900129260005500228300001500283650001200298653002000310230512b        |||||||| |||| 00| 0 eng d  a0-309-04899-0  aNational Science LibrarycNational Science Library  a910.26bN3  aToward a coordinated spatial data infrastructure for the nation c/ Mapping Science Committee   aWashington, D.C.: bNational Academy Press, c1993  axv, 171p.   aTravel   aState agencies