000			00396aam a2200145 4500
008			230307t1954 ||||| |||| 00| 0 eng d
041			_aeng
080			_a517 _bR5
100			_aRichardson, C. H.
245			_aAn Introduction to the calculas of finite differences
260			_aPrinceton _bVan Nostrand _c1954
300			_avi, 142p. _bIndex included
650			_aCALCULUS _920141
942			_cBK
999			_c51497 _d51497