I question if the use of a series number as suggested below is an ideal approach. I believe it is intended for a smaller number of items which are intentionally published as a series. I'd suggest that the closest thing to PG etexts numbers in a traditional research library, would be accession numbers (as commonly used for microforms) Andrew On Fri, 19 Nov 2004, Brad Collins wrote:
** Series
,----[ ISBD(ER) 6.6.1 ] | 6.6.1 The numbering of the item within a series or sub-series is | given in the terms in which it appears in the item. Standard | abbreviations may be used. Arabic numerals are substituted for other | numerals or spelled-out numbers. e.g. | | - (Multimedia learning series ; vol. 2) | - (Visit Canada series ; vol. C) | - (Computer simulation games ; module 5) | - (BTS research report ; 2) `----
Steve's script give's us:
830 0|aProject Gutenberg|v9737
But the ISBD suggests something like this:
(Project Gutenberg etext ; no. 8654)
830 0|a(Project Gutenberg etext ; |vno. 9737
or BMF:
series : ($a[Project Gutenberg etext] ; no. $vol[9737])