TY  - BOOK
AU  - Green,Donald Ross
AU  - Ford,Marguerite P.
AU  - Flamer,George B.
ED  -  CTB/McGraw-Hill Conference on Ordinal Scales of Cognitive Developmen t 
TI  - Measurement and piaget: : [Proceedings / 
U1  - 155.413 CAL 
PY  - 1971///
CY  - New York : 
PB  - McGraw-Hill, 
KW  - Piaget, Jean, 
KW  - Cognition in children
KW  - Congresses
KW  - Scale analysis (Psychology)
N1  -  Includes bibliographical references (p.262-276)
ER  -