Cromwell, A. D., & Davis, K. C. (1915). Agriculture and life: A text-book for normal schools and teachers' reading circles. J.B. Lippincott company.
Citace podle Chicago (17th ed.)Cromwell, Arthur D., a Kary Cadmus Davis. Agriculture and Life: A Text-book for Normal Schools and Teachers' Reading Circles. Philadelphia, London: J.B. Lippincott company, 1915.
Citace podle MLA (8th ed.)Cromwell, Arthur D., a Kary Cadmus Davis. Agriculture and Life: A Text-book for Normal Schools and Teachers' Reading Circles. J.B. Lippincott company, 1915.
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