000 00231pam a2200085a 44500
008 140414b xxu||||| |||| 00| 0 eng d
245 _aSCIENTIFIC AMERICAN VOL. 258 1988
_c
260 _aNEW YORK
_bSCIENTIFIC AMERICAN INC.
_c
906 _a46390
999 _c42291
_d42291