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Coding and decoding from the binary system to the decadic system and vice versa. Instruction outline designed for the third grade. Pt. 2. Codieren und Decodieren vom 2-System ins 10-System und umgekehrt. Unterrichtsentwurf fuer das dritte Schuljahr. T. 2. (German)
Sachunterr. Math. Primarst. (Dec 1978) v. 6(12) p. 558-573. [ISSN 0170-0944]
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