TY - RPRT TI - 2022 NCWM-NIST national survey on 20 lb LPG (propane) cylinders : AU - Sefcik, David A AU - Lippa, Katrice A AU - Heckert, N Alan AU - Benjamin, Stephen AU - Hankins, Ivan D AU - Onwiler, Don PY - 2022 PB - National Institute of Standards and Technology (U.S.) CY - Gaithersburg, MD SN - NIST SP 2200-01 DO - 10.6028/NIST.SP.2200-01 ER -