00514nam a2200169Ia 4500008004100000040001700041082002200058100001700080110005000097245004000147260005100187300001000238440002400248650003700272700002000309700001500329190327s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta508.3bU58R  aRyle, Martin  aUnited Kingdom. Central Office of Information 0aResearch and discoverycMartin Ryle  aLondonbHer Majety's Stationary Officec[19-?]  a103p.  aModern world series  aResearch; Discoveries in Science  aBragg, Lawrence  aSayce, L A