# Endnotes explained — Armageddon 2419 A.D.

> Chapter companion for Armageddon 2419 A.D. by Philip Francis Nowlan.

## What happens

This chapter contains endnotes providing citations and clarifications for references made in the main text, including a note on a uranium compound used as a source of radium.

## Key lines

> A hydrovanadate of uranium, and other metals; used as a source of radium compounds.

A compound containing uranium and other metals, used to extract radium.

_Clarifies the chemical reference in the text._

## Links

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