German to English] I'm on the board of a local history museum. We're volunteer run and have limited resources. We've come across this document, we believe it's a passport. Can anyone translate?
Über Chromatophoren. Reinigung und Analyse der Farbstoffträger aus Mohrrüben und Spinatblättern - Straus - 1942 - Helvetica Chimica Acta - Wiley Online Library