Britannica junior; the boys' and girls' encyclopaedia. Vol. 1-12. Prepared under the supervision of the editors of the Encyclopaedia Britannica, Inc.
R571267. Britannica junior; the boys' and girls' encyclopaedia. Vol. 1-12. Prepared under the supervision of the editors of the Encyclopaedia Britannica, Inc. NM: additions & revisions. © 28Feb46; A2559. Encyclopaedia Britannica, Inc. (PWH); 11Feb74; R571267.
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