@misc{1162936, author = {Robert Alvarez and Keith R Eberhardt and Robert Elser and Lilian M Ewen and Robert B McComb and Dennis J Reeder and Robert Rej and Leslie M Shaw and George A Uriano and Jr Bowers and Robert Schaffer}, title = {Standard Reference Materials:The measurement of the catalytic (activity) concentration of seven enzymes in NBS human serum SRM 909}, year = {1983}, month = {1983-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.SP.260-83}, language = {en}, }