pencil

author: Petroski, Henry.
title: pencil
publisher: Knopf
date: 1990
call number: TS1268 .P47 1990
physical description: xi, 434 p. : ill. ; 24 cm.
notes: by Henry Petroski. Includes index. Bibliography: p. 385-407.
responsibility statement: by Henry Petroski.
subjects: Pencils; History;