Bedfordshire Archives Service Catalogue

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Reference
AQ6/2B
Title
Post 1932 technical literature
Date free text
1932 - 1991
Production date
From: 1932 To: 1991
Scope and Content
Loose catalogues, exact duplicates of catalogues in AQ6/2C have not been retained, superseded editions have been kept. In order to allow for additions to the catalogue the AP number is included as part of the reference number e.g. AQ6/2B/AP202. Numbering and dating system. AP1000 series General AP2000 series Diesel Engines AP3000 series Steam Engines AP4000 series Steam Turbines AP4500 series Gas Turbines (introduced after 1945) AP5000 series Condensing Plant AP6000 series Pumps AP7000 series Electrical Equipment AP8000 series Gearing (introduced after 1945) Individual publications were identified by Editions (A, B, C etc.) and date code, which gave the month and the year. Thus 0742 represented July, 1942. Dating appears to have stopped in the mid 1980s with publication under the NEI name.
Level of description
file