[ Autographs ] PYOTR L. KAPITSA (1894 - 1984) Soviet physicist who studied under Ernest Rutherford, directed the Soviet nuclear program until dismissed for his refusal to work on an atomic bomb, later reinstated and became a pioneer in liquefied gases. Rare A.Ms.S. with initials "P. K.", 3pp. 4to., [n.p., n.d.] in pencil, a manuscript likely intended for publication, concerning inventions.E400-600