Numerical Recipes : By William H. Press, Brian P. Flannery, Saul A. Teukolsky and William T. Vetterling, Cambridge University Press, Cambridge, England, 1986. ISBN 0-521-30811-9, 818 pp. plus index and contents, £25.00. Numerical Recipes FORTRAN Disk, ISBN 0-521-30958-1; Numerical Recipes Pascal Disk, ISBN 0-521-30955-7; Numerical Recipes Example Book (FORTRAN), ISBN 0-521-31330-9; Numerical Recipes Example Book (Pascal), ISBN 0-521-30956-5; Numerical Recipes Example Disk (FORTRAN), ISBN 0-521-30957-3; Numerical Recipes Example Disk (Pascal), ISBN 0-521-30954-9. The examples books and the disks are £15.00 each