@BOOK{ Book!D - 72141992,
AUTHOR = "Polya, George",
TITLE = "Mathematical discovery: on understanding, learning, and teaching; problem solving",
LIBRARY= "كتابخانه مركزی دانشگاه صنعتی شریف",
SUBJECT = "، Mathematics-- Problems, exercises, etc,، Problem solving",
URL = "/book/72141992/Mathematical-discovery-on-understanding-learning/"}