by Wachs, Theodore D
Published in Intelligence (Norwood) (01.04.1993)

by Wachs, T.D, Bishry, Z, Sobhy, A, McCabe, G, Galal, O, Shaheen, F
Published in Child development (01.04.1993)

by Wachs, Theodore D., Bishry, Zeinab, Sobhy, Afaf, McCabe, George, Galal, Osman, Shaheen, Farouk
Published in Child development (01.04.1993)