000 00294nam a2200109 4500
008 240726b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
245 _aBibliografia
260 _aMexico:
_bInfonavit,
_c1976
300 _a276p.
942 _2udc
_cBK
999 _c64760
_d64760