TY - RPRT TI - Synonymous codon usage in Bacillus subtilis reflects both translational selection and mutational biases. AU - D C Shields AU - P M Sharp PY - 1987 DO - 10.1093/nar/15.19.8023 UR - https://pubmed.ncbi.nlm.nih.gov/3118331/ ID - 3118331 ER -