TY - GEN AU - Schwartz, Kathryn M C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1950-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.CIRC.503 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1950 TI - Circular of the Bureau of Standards no. 503::statutory net-content marking requirements for packages (undefined) and packages of foods, drugs, and cosmetics ER -