00420nam a2200169Ia 450000500170000000800410001702000120005808200150007010000230008524500440010825000120015226000310016430000080019550500220020394200080022599900170023320241209164221.0241209s9999 xx 000 0 und d afca3137 a517.8/S75i aSpiegel, Murray R. 0aTheory and problems of complex variable a1a. ed. aNew YorkbEd. Schaumc1964 a313 aTexto en ingleĢs yLIB c19765d19765