CHNOPS: the six most abundant elements of life. Pearson BioCoach, 2010. "Most biological molecules are made from covalent combinations of six important elements, whose chemical symbols are CHNOPS". Archived 2017-07-27 at the Wayback Machine
CHNOPS: the six most abundant elements of life. Pearson BioCoach, 2010. "Most biological molecules are made from covalent combinations of six important elements, whose chemical symbols are CHNOPS". Archived 2017-07-27 at the Wayback Machine