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020 _chb
041 _aeng
100 1 _aNavarraJohn Gabriel
245 1 0 _aThe development of scientific concepts in a young child :
_bA case study /
_cJohn Gabriel Navarra
246 _aA case study
260 _aNew York :
_bTeachers College Columbia University,
_c1955
300 _a147p.
504 _aIncludes bibliography
999 _c30096
_d30096