Dwight Wayland Irvin
Teaching Pyramid Infant-Toddler Observation Scale (Tpitos(tm)) for Infant-Toddler Classrooms Manual, Research Edition- Teaching Pyramid Infant-Toddler Observation Scale (Tpitos(tm)) for Infant-Toddler Classrooms, Research Edition
- Teaching Pyramid Infant-Toddler Observation Scale (TPITOS) for Infant-Toddler Classrooms Manual, Research Edition Set