NICARAGUA

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1971 arch12


1971 formula2


1971 formula5


1971 napier1


1984 bradley2


1985 halley18


1985 halley19


1985 halley20


1985 halley21


1994 airy


1994 bessel2


1994 gauss7


1994 halley37


1994 herschel_william5


1994 hubble2


1994 newton25


1996 heisenberg8