Werdelin, G. O. a. I. Science and technology in the primary school of tomorrow a study prepared for the International Bureau of Education. Unesco.
Čikaški stil citiranja (17. izdanje)Werdelin, Graham Orpwood and Ingvar. Science and Technology in the Primary School of Tomorrow a Study Prepared for the International Bureau of Education. Unesco.
MLA način citiranja (8. izdanje)Werdelin, Graham Orpwood and Ingvar. Science and Technology in the Primary School of Tomorrow a Study Prepared for the International Bureau of Education. Unesco.
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