TY  - BOOK
AU  - Ushinskii,K.D.
AU  - Piskunov,A.I.
TI  - K. D. Ushinsky: selected works 
U1  - 370.947 
PY  - 1975///
CY  - Moscow
PB  - Progress
KW  - Ushinskii, K. D.
KW  - Education
KW  - Russia
KW  - History
N1  - Bibliography: p. [81]
ER  -