/usr/share/doc-base/pcb is in pcb-common 20110918-9.
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Title: Pcb Manual
Author: harry eaton <haceaton@aplcomm.jhuapl.edu>
Abstract: This document is a manual for Pcb, the interactive printed circuit
board layout system for X11.
Section: Science/Electronics
Format: HTML
Index: /usr/share/doc/pcb-common/pcb.html
Files: /usr/share/doc/pcb-common/pcb.html
Format: Info
Index: /usr/share/info/pcb.info.gz
Files: /usr/share/info/pcb.info*
Format: PDF
Files: /usr/share/doc/pcb-common/pcb.pdf.gz
Format: DVI
Files: /usr/share/doc/pcb-common/refcard.pdf.gz
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