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Classic usage
Vocabulary level: Upper-intermediate · Flesch–Kincaid grade 6 · 2,967 sentences
Vocabulary level is estimated from word frequency, not an official CEFR classification.
Subjects: Pluto (Dwarf planet) — Fiction · Science fiction
Words worth knowing: collide · congeal · unscrew · baseball · asteroid · dramatically · crystalline · acceleration
The Secret of the Ninth Planet A Science Fiction Novel By Donald A. Wollheim Jacket design by James Heugh [Transcriber note: Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.]
Cecile Matschat, Editor Carl Carmer, Consulting Editor THE JOHN C. WINSTON COMPANY Philadelphia Toronto Copyright, 1959 By Donald A. Wollheim FIRST EDITION Library of Congress Catalog Card Number 59-5328 Manufactured in the United States of America For-- Three denizens of this minor planet: Eleanor, Bill, and of course Janet.
Contents The Mysterious Ninth World 1.
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