000 003050000a22001210004500
245 _aDifferential equations applied in science and engineering
100 _aWayland, Harold
260 _aNew York
_bVan Nostrand
_c1957
300 _axiii, 353p.
080 _a517.91
_bW3
041 _aEN
942 _cBK
999 _c51567
_d51567