Text ( visual ) : unmediated Chisholm's handbook of commercial geography / entirely rewritten by Dudley Stamp. -- 20th ed. / rev. by G. Noel Blake and Audrey N. Clark. -- London ; New York : Longman , 1980. -- xxxii, 984 p. : ill. ; 25 cm. -- Includes index. -- ISBN 0582300150 ; (BA13751917) ; https://ci.nii.ac.jp/ncid/BA13751917 Author Heading(s): Stamp, L. Dudley (Laurence Dudley) ; Blake, G. Noel ; Clark, Audrey N.. -- Classification(s): LCC : HF1025 ; DC : 338/.09. -- Subject Heading(s): LCSH : Commercial geography ; LCSH : Commercial products