@misc{1182971, author = {J Horlick and T L Cummings and G W Bullman}, title = {Collaborative reference program for rubber ::analyses no. 40 April -June 1979}, year = {1979}, month = {1979-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.IR.79-1805}, language = {en}, }