Winkel Tripel BOPC
||Winkel Tripel BOPC
||Oswald Winkel (1921)
||Winkel Tripel variant using 0° as reference parallels, see What’s the Winkel Tripel BOPC?.
The year 1921 refers to the creation date of the original projection, I don’t know when the variant was developed or who did it.
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When marked with [≈], sizes with and without
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