WORLDS AND ADVENTURES (Traveller Book 2, 1977 edition)
World Generation: The Hydrographics formula should be 2D–7+atmosphere, not 2D–7+size.
WORLDS AND ADVENTURES (Traveller Book 3, 1981 edition)
World Generation Checklist, p. 12: While the World Creation section (p. 7) shows the Hydrographics formula as 2D–7+atmosphere, the checklist incorrectly shows the Hydrographics formula as 2D–7+size.
THE TRAVELLER BOOK (1982)
World Generation Checklist, p. 85: While the World Creation section shows the Hydrographics formula as 2D–7+atmosphere, the checklist incorrectly shows the Hydrographics formula as 2D–7+size.
STARTER TRAVELLER (1983)
World Generation Checklist, p. 15: While the World Creation section shows the Hydrographics formula as 2D–7+atmosphere, the checklist incorrectly shows the Hydrographics formula as 2D–7+size.
This is quite a surprise, and something I've never noticed in 30 years. Even Scouts, MT, TNE, and T4 have Hydro as 2D-7+Size in the checklists.
I've always gone by the checklist and at this point I might as well just keep it +size.
All those worlds....