Text ( visual ) : unmediated Spatial applications of exploratory data analysis / by David Sibley. -- Norwich : Geo Books , [1988?]. -- 37 p. : ill. ; 21 cm. -- (Concepts and techniques in modern geography ; no. 49). -- Cover title ; Errata slip inserted ; Bibliography: p. 35-37. -- ISBN 0860942287 ; (BA13806305) ; https://ci.nii.ac.jp/ncid/BA13806305 Author Heading(s): Sibley, David. -- Classification(s): NDC8 : 290.19 ; LCC : G70.3 ; DC19 : 910/.01/51. -- Subject Heading(s): LCSH : Geography -- Statistical methods ; LCSH : Spatial analysis (Statistics)