THE EFFECTS OF TWO KINDS OF REINFORCEMENT ON THE PERSISTENCE SCORES OF CHILDREN OF DIFFERENT ABILITY PATTERN = LES EFFETS DE DEUX SORTES DE RENFORCEMENTS SUR LES SCORES DE LA PERSISTANCE CHEZ LES ENFANTS AYANT DES STRUCTURES D'APTITUDE DIFFERENTESBARTON K; BARNARD JW.1972; J. PSYCHOL.; U.S.A.; DA. 1972; VOL. 82; NO 1; PP. 13-19; BIBL. 5REF.Article

PRECISE ATOMIC MASS DIFFERENCES FOR 68 <OU= Z <OU= 72BARBER RC; BARNARD JW; BURRELL DA et al.1974; CANAD. J. PHYS.; CANADA; DA. 1974; VOL. 52; NO 23; PP. 2386-2394; ABS. FR.; BIBL. 25 REF.Article