Civilization manualBook 1: From Bare Hands to Steam and Electricity765 entries · 23 phases · 100 years
The Island
Phase 11 — Glass, chemistry, petroleum, rubber and cement  /  About year 29
11.45

Concrete and iron-reinforced concrete

engine beds, dams, harbour walls

MakingYear 29Stands on 167 earlier

AWhat it needs

Needs 167 other products in all, 2 of them directly.

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