Eckert, Lyons, & Strevell. (1950). Directed Experiments in Chemistry. College Entrance Book Company.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Eckert, Lyons, ба Strevell. Directed Experiments in Chemistry. New York: College Entrance Book Company, 1950.
MLA -ийн эшлэл (9 дэх хэвлэлт)Eckert, et al. Directed Experiments in Chemistry. College Entrance Book Company, 1950.
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