TY - BOOK AU - Hughes,I.S. TI - Elementary particle T2 - Penguin library of physical sciences: physics SN - 0140802770 U1 - 539.721 HUG/E PY - 1972/// CY - . - Harmondsworth PB - : Penguin KW - Particles (Nuclear physics) N1 - Bibliography: p. 247-250 ER -