"nitrogenous base." YourDictionary, n.d. Web. 22 June 2018. <http://www.yourdictionary.com/nitrogenous-base>.
nitrogenous base. (n.d.). Retrieved June 22nd, 2018, from http://www.yourdictionary.com/nitrogenous-base
Do you use YourDictionary every day? If not, remember that it is never to late to do so!
Let us be there for you: