Pure Appl. Chem., 1961, Vol. 3, No. 1-2, pp. 33-36
http://dx.doi.org/10.1351/pac196103010033
Experience in the United States with proposed safe levels of exposure to toxic beryllium compounds
First page:

Pure Appl. Chem., 1961, Vol. 3, No. 1-2, pp. 33-36
http://dx.doi.org/10.1351/pac196103010033