pee
Fete
LOMoe, wt wy ed
“EYFLS = “F if
RHL-69-5
STRONTIUM-90, STRONTIUM-89, PLUTONIUM-239,
AND PLUTONIUM-238 CONCENTRATION IN GROUND
LEVEL AIR FROM 1964 TO 1969
Northeastern Radiological Health Laboratory
Winchester, Massachusetts
BUREAU OF RADIOLOGICAL HEALTH
PUBLIC HEALTH SERVICE
4s