000 00225 a2200097 4500
001 6118
100 _aStakgold, I
245 _aBoundary valve problems mathematical physics.
260 _a
_bMacmillan
_c
090 _c5014
_d5014
942 _aNUST-CAE
_cM
_c31395
999 _c241191
_d241191