Data collection system : National Dual Record and related system /
Wells, Bradley H.
Data collection system : National Dual Record and related system / H. Bradley Wella. - Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 1974. - 28 p. ; 25 cm. - Scientific report series ; no. 15 .
Includes bibliographic references.
Population.
Dual record systems.
001.433 WEL
Data collection system : National Dual Record and related system / H. Bradley Wella. - Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 1974. - 28 p. ; 25 cm. - Scientific report series ; no. 15 .
Includes bibliographic references.
Population.
Dual record systems.
001.433 WEL