Data collection
Daughterty, Richard
Data collection - - Oxford Oxford Univ. Press, 1974 - 70 p. 20cm., - TRB TRR 660 : 1977 .
1
Geogrphy-Satistical methods
911. Dau
Data collection - - Oxford Oxford Univ. Press, 1974 - 70 p. 20cm., - TRB TRR 660 : 1977 .
1
Geogrphy-Satistical methods
911. Dau