Heimler, C. H. (1989). Focus on physical science. Columbus, Ohio: C. E. Merrill.
Trích dẫn kiểu ChicagoHeimler, Charles H. Focus On Physical Science. Columbus, Ohio: C. E. Merrill, 1989.
MLA CitationHeimler, Charles H. Focus On Physical Science. Columbus, Ohio: C. E. Merrill, 1989.
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