[Leo liebermann, chemist and social hygienist].
D002621:Chemistry / Q000266:history; D006266:Health Education / Q000266:history; D049672:History, 19th Century; D049673:History, 20th Century; D006814:Hungary; D012736:Sex Education / Q000266:history
Liebermann Leó a kémikus, szociálhigiénikus