Farmakognozija
Bojensen Homepage: http://www.bojensen.net/
Chemguide: http://www.chemguide.co.uk/index.html#top
Henriette's Herbal Homepage: http://www.henriettesherbal.com/index.html
Obvestila, gradiva, forum ipd. o predmetih prof. Krefta: http://kreft.weebly.com/index.html
Richard Dawkins - dokumentarni film o znanstveni neosnovanosti zdravilstva: http://video.google.com/videoplay?docid=-4720837385783230047
The Virtual Laboratory: http://vlp.mpiwg-berlin.mpg.de/index_html