共 5 条
[1]
SINGER L, 1940, IND ENG CHEM ANAL ED, V12, P127
[2]
Smiley W. G, 1965, NUCL SCI ABSTR, V3, P391
[4]
THOMPSON JG, 1937, J RES NBS, V18, P259
[5]
1954, NBS398 CIRC