000 00302pam a2200121a 44500
010 _a61011180
082 _a530.15
_bSA18B
100 _aSagan, Hans
245 1 _aBOUNDARY AND EIGENVALUE PROBLEMS IN MATHEMATICAL PHYSICS
260 _a
_bJohn Wiley & Sons
_c1961
964 _gCIRC
997 _a74958 C
999 _c411056
_d411056