共 3 条
[1]
The zinc sulphide method of measuring ultra-violet radiation and the results of a year's observations on Baltimore sunshine
[J].
AMERICAN JOURNAL OF HYGIENE,
1929, 9 (03)
:646-662
[2]
COBLENTZ, 1929, BUR STANDARDS J RES, V3, P629
[3]
Note on observation of ultra-violet radiation of sun and sky measured by the zinc sulphide method in Boulder, Colorado
[J].
AMERICAN JOURNAL OF HYGIENE,
1929, 9 (03)
:663-665