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  Stabilizers for Photographic Silver Halide Emulsions: Progress in Chemistry ... - Gunther Fischer - Google Books

  https://books.google.de/books?id=frkGCAAAQBAJ&dq=Emil-Joachim+Birr&lr=&hl=de&source=gbs_navlinks_s

  Stability is one of the most important performances required for silver halide photographic materials. In 1935, Dr. E. 1. Birr introduced the concept of the stabilization ofphotographic emulsions for the first time by inventing a most effective stabilizer,…

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  Chemical Defenses of Arthropods - Murry Blum - Google Books

  https://books.google.de/books?id=QutCnYyevcUC&pg=PA463#v=onepage

  Chemical Defenses of Arthropods charts the significant progress in the study of chemical defenses in arthropods, a rapidly expanding area of chemical ecology. The book groups the defensive compounds secreted by arthropods based on their main…

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