Text ( visual ) : unmediated Proceedings ACM 2003 Symposium on Software Visualizarion, San Diego, California, USA, June 11-13, 2003 / proceedings production editor, Sephen N. Spencer ; sponsored by ACM SIGCHI ... [et al.] ; in cooperation with ACM SIGCSE. -- New Yorks : Association for Comuputing Machinery , c2003. -- 218 p. : ill.(some col.) ; 28 cm. -- Includes bibliographical references ; "ACM Order Number: 102032"--on T.p. verso. -- ISBN 1581136420 ; (BA63001726) ; https://ci.nii.ac.jp/ncid/BA63001726 Author Heading(s): Symposium on Software Visualization ; Spencer, Stephen N. ; SIGCHI (Group : U.S.) ; Association for Computing Machinery. Special Interest Group on Computer Science Education