181. Specification for gas burning appliances. Specification for gas burning instantaneous water heaters with automatic output variation (2nd and 3rd family gases) Part 5, (29th February 1988) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (32 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
182. Specification for hexachloroethane. (14th March 1968) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (17 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
183. Specification for paraformaldehyde. (8th April 1964) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
184. Specification for photographic grade 1-phenyl-3-pyrazolidinone (Phenidone). (28th April 1978) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
185. Specification for photographic grade ammonium thiocyanate. (28th April 1978) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
186. Specification for photographic grade ammonium thiosulphate solution. (28th April 1978) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
187. Specification for photographic grade benzotriazole. (28th April 1978) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (8 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
188. Specification for photographic grade boric acid. (28th April 1978) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (8 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
189. Specification for photographic grade hydroquinone (p-dihydroxybenzene). (28th April 1978) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
190. Specification for phthalic anhydride. (24th July 1964) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗