@misc{1164861, author = {R L Bowen}, title = {Hardening shrinkage forces in direct filling materials::progress report}, year = {1965}, month = {1965-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.RPT.8959}, language = {en}, }