Sobecki, Dave Math in our world / Dave Sobecki, Allan G. Bluman, Angela Schirck-Matthews - 2nd ed. - New York : Springer , 2011 - xxviii, 863 p. : ill. col. ; 29 cm. Rev. ed. of : Mathematics in our world / Allan G. Bluman, 2005 ISBN: 9780077356651 RM447.39