Civilization manualBook 1: From Bare Hands to Steam and Electricity765 entries · 23 phases · 100 years
The Island
Phase 22 — The propeller airplane  /  About year 70
22.17

Aerial photography and mapping

the whole island photographed from above and drawn from the pictures

KnowledgeYear 70Stands on 361 earlier

AWhat it needs

Needs 361 other products in all, 4 of them directly.

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Open a box to see what it needs. A dashed box is a product already drawn in full: click it to jump there. In the org chart, drag to move around.

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