Stanford University Class confirmed
EARTHSYS252 Autumn 2026 · 1 section

You found EARTHSYS 252.

Marine Chemistry (EARTHSYS 152, ESS 152, ESS 252, OCEANS 152, OCEANS 252)

Harbor turns your EARTHSYS 252 notes into a readiness map so you can see what looks solid, shaky, or missing.

Built from this class—not a generic study guide.

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