Encyclopedia : A : AP : AP4 (3 articles)

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Ap-41 process
Obsolete colour reversal process used generally until 1983 for photographic films such as Agfa CT18. Significantly different to other colour reversal processes such as Ektachrome and Kodachrome ..
AP 42 Compilation of Air Pollutant Emission Factors
The AP 42 Compilation of Air Pollutant Emission Factors, was first published by the U.S. Public Health Service in 1968. In 1972, it was revised and issued as the second edition by the U.S. Environmental Protection Agency (EPA). In 1985, the subsequent fourth edition was split into two volumes. Volum..

 

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