@BOOK{ Book!D - 100980200,
AUTHOR = "",
TITLE = "Mathematical discovery; on understanding, learning, and teaching problem solving",
LIBRARY= "كتابخانه پردیس علوم (دانشگاه تهران)",
SUBJECT = "Mathematics -- Problems, exercises, etc.,Problem solving",
URL = "/book/100980200/Mathematical-discovery-on-understanding-learning/"}