TY - RPRT TI - Letter Circular 500: the National Bureau of Standards and the establishment of hard refined dextrose and laevulose industries AU - Bates, Frederick PY - 1937 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - LCIRC 500 DO - 10.6028/NBS.LCIRC.500 ER -