TY  - JOUR
PY  - 1976//
TI  - Play in pre-school centres--I. Play measures and their relation to age, sex and I.Q
JO  - Journal of child psychology and psychiatry
A1  - Tizard, B.
A1  - Philps, J.
A1  - Plewis, I.
SP  - 251
EP  - 264
VL  - 17
IS  - 4
N2  - <p>[Abstract unavailable]</p> <p>Language: en</p>
LA  - en
SN  - 0021-9630
UR  - http://dx.doi.org/
ID  - ref1
ER  -