Československá hygiena 1959, 4(2-3):119-125

Hygienic principles of standardazing lessons at school

S. M. Grombach

Published: February 1, 1959  Show citation

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Grombach SM. Hygienic principles of standardazing lessons at school. Československá hygiena. 1959;4(2-3):119-125.
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