already pursuing a mere four years later a mere four years later already pursuing a mere four years later a mere four years later a mere four years later a mere four years later a mere four years later a mere four years later Did Fuchs matter or didn’t he a mere four years later a mere four years later مختبر متخصص in 1949 a mere four years later a mere four years later a mere four years later Did Fuchs matter or didn’t he a mere four years later a mere four years later a mere four years later a mere four years later in 1949 six months to two years a mere four years later a mere four years later a mere four years later a mere four years later a mere four years later a mere four years later a mere four years later a mere four years later a mere four years later a mere four years later soviet-atomic-program-1946 already pursuing in 1949 a mere four years later a mere four years later a mere four years later a mere four years later a mere four years later six months to two years a mere four years later a mere four years later a mere four years later