000 00427pam a2200157a 44500
008 140414b1967 xxu||||| |||| 00| 0 eng d
082 _aB27
_bBUT; K7
100 _aBUTZER, PAUL L
245 _aSemi-Groups of Operators and Approximation
_c
260 _aNEW YORK
_bSpringer Verlag Berlin Heidelberg
_c1967
650 _a SCIENCE
650 _aBANACH SPACES
690 _aSCIENCE
700 _aBERENS, HUBERT
906 _a25545
999 _c24529
_d24529