000 00410pam a2200157a 44500
082 _a517.38
_bH342i
100 _aHeading, J.
245 1 _aAN INTRODUCTION TO PHASE-INTEGRAL METHODS
260 _aLondon
_bMethuen
_c1962
300 _a160
650 _aDifferential Equations, Linear. Numerical Solutions
650 _aIntegrals
650 _aMathematical Physics
964 _gCIRC
997 _a50747 C
999 _c428856
_d428856