00319nam a22001097a 4500020001800000082001500018100001700033245005200050260005200102300001900154650003600173 a9780521147125 a510 HAR/F aHartman, Bob aFunctional mathematics/cBob Hartman...[et al.] aCambridge:bCambridge University Press,cc2009. a144p. ;b25cm. aMathematics--Study and Teaching