TY - GEN AU - Blair, Mary Grace AU - Peffer, Elmer L C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1945-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.CIRC.449 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1945 TI - Circular of the Bureau of Standards no. 449::hydrometer correction tables and thermal-density coefficients for vegetable tanning extracts ER -