TY - RPRT TI - Circular of the Bureau of Standards no. 541: a spectrophotometric atlas of the ²Σ-²II transition of OH AU - Bass, Arnold M PY - 1953 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS CIRC 541 DO - 10.6028/NBS.CIRC.541 ER -