Hello, Eru,
stated in Great Soviet Encyclopedia, 2d edition (ru, 1957), vol.46, p.64: 280-233 BC.
stated in Great Soviet Encyclopedia, 3d edition (ru, 1978), vol.28, p.192: 288-233 BC.
(It was probably old mistake, but it was.)
Hello, Eru,
stated in Great Soviet Encyclopedia, 2d edition (ru, 1957), vol.46, p.64: 280-233 BC.
stated in Great Soviet Encyclopedia, 3d edition (ru, 1978), vol.28, p.192: 288-233 BC.
(It was probably old mistake, but it was.)