@misc{1166831, author = {Carl W Coblentz and Paul R Achenbach}, title = {Performance tests of four cleanable impingement air filters types 44 (two thicknesses), FS 304 and FS 504 ::manufactured by The Farr Company Los Angeles, California}, year = {1959}, month = {1959-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.RPT.6404}, language = {en}, }