TY - MANSCPT DB - Science History Institute DP - Science History Institute M2 - Courtesy of Science History Institute. Rights: Public Domain Mark 1.0 TI - Certificate licensing Donald F. Othmer as a Professional Engineer in the State of New Jersey ID - 47429921g AU - New Jersey Board of Professional Engineers and Land Surveyors DA - 1948/12/17/ YR - 1948 AV - Folder 1 VL - Folder 1 AN - Folder 1 UR - https://digital.sciencehistory.org/works/47429921g KW - Chemical engineering KW - New Jersey Board of Professional Engineers and Land Surveyors KW - Othmer, Donald F. (Donald Frederick), 1904-1995 LA - English ER -