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BS 1380-5:1985

Speed of sensitized photographic materials-Method for determining the speed of direct positive colour print camera materials
standard by BSI Group, 07/31/1985

BS 1491:1970

Specification for dimensions of 127, 120 and 620 photographic roll film, backing paper and film spools
standard by BSI Group, 01/30/1970

BS 1000[1]:1969

Universal Decimal Classification. English full edition-Philosophy (excluding 159.9 Psychology)
standard by BSI Group, 11/28/1969