Added areas 3478-79, datum 6758, conversions 15586-87, proj 19860, CRSs 3448-50 4758 4894-95, tfms 15925-26. For proj 19909-10 changed area of use code from 1128 to 3342, amended remarks regarding supersession. For tfms 1083-86 and 10086-88 changed area of use code from 1128 to 3342. For CRS 24200, added remarks regarding its supersession. Deprecated tfm 1086 and added replacement 15927.