"Essentially, a translation of the chapter on fragrance and flavor materials in Ullmanns Encyklopädie der technischen Chemie, volume 20, 4th edition, ...
"Essentially, a translation of the chapter on fragrance and flavor materials in Ullmanns Encyklopädie der technischen Chemie, volume 20, 4th edition, Verlag Chemie GmbH, Weinheim ... 1981"--Pref.