What bookdealers really mean. A dictionary by Tom Congalton and Dan Gregory (Between the Covers), with additions from other sources
Refers to the standard reference book about wine books printed in the English language, Wine Into Words: A History and Bibliography of Wine Books in the English Language by James M. Gabler. Originally published in 1985, it was reissued in a greatly enlarged version in 2004, and with the numbering system used to identify the books changed. Thus if someone quotes a Gabler number at you, you'd better find out what edition they used to determine what book they are referring to.