00465nam a2200133Ia 4500082002000000100001800020245006000038260005200098300003800150490005300188500005400241500000500295700003100300 a515.35bL257.SO aLandis, E. M. aSecond order equations of elliptic and parabolic typeb aProvidencebAmerican Mathematical Societyc1998 axi, 203p. Index, Bibl., Appendix. aTranslations of Mathematical monographsv v. 171 a"Purchased under NBHM grant for the year 1998-99" a aRozhkovskaya, Tamara ; tr.