SEMMEL, Melvyn I.; THIAGARAJAN, Sivasailam. OBSERVATION SYSTEMS AND THE SPECIAL EDUCATION TEACHER. Focus on Exceptional Children, [S. l.], v. 5, n. 7, 1973. DOI: 10.17161/foec.v5i7.7381. Disponível em: https://journals.ku.edu/focusXchild/article/view/7381.. Acesso em: 22 jul. 2024.