TY - GEN AU - John H Eiseman C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1934-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.CIRC.404 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1934 TI - Circular of the Bureau of Standards no. 404::cautions regarding gas-appliance attachments ER -