00346nam a2200133Ia 450000500170000000800410001708200120005810000220007024500460009226000430013830000080018194200080018999900150019720260225050929.0260224s9999||||xx |||||||||||||| ||und|| a530 CHU aRuel V. Churchill 0aFourier series and boundry value problms  aTokyo: McGraw-Hill Kogakusha Ltdc1963 a248 cBBS c9952d9952