After studying agriculture in France, sponsored by Baron Edmond de Rothschild, Aaron Aaronsohn botanically mapped Palestine and its surroundings and became a leading expert on the subject.
* Slovenski kemijski portal Kemija.org - Na strani se nahajajo zanimivosti in novosti s področja kemije (eksperimenti, članki ...)* CID 311 from PubChem - (v angleščini)* European Citric Acid Manufacturers Association - (v angleščini)* NextBio Citric Acid Entry - (v angleščini)* Citric acid analysis - free spreadsheet for titration of acids and pH calculation - (v angleščini)* Applications of Citric Acid - (v angleščini)