TY - BOOK AU - Hadamard,Jacques TI - An essay on the psychology of invention in the mathematical field T2 - Dover books explaining science AV - BF411 H33 1945 PY - 1945/// CY - New York PB - Dover publications KW - Lemb KW - Psicología KW - Inventos KW - Matemáticas N1 - Incluye apèndice ER -