TY - BOOK AU - Mielenz, K. D AU - Eckerle, K. L TI - Design, construction and testing of a new high accuracy spectrophotometer T2 - National Bureau of Standards Technical Note; 729 PY - 1972/// CY - Washington PB - U. S. Department of Commerce KW -  Applied optics  KW -  Optical instruments KW -  Spectrophotometer  KW - Astronomy and astrophysics thesaurus  ER -