Wallace, T. The diagnosis of mineral deficiencies in plants by visual symptoms: A colour atlas and guide (3a ed.).
Chicago-viite (17. p.)Wallace, T. The Diagnosis of Mineral Deficiencies in Plants by Visual Symptoms: A Colour Atlas and Guide. 3a ed.
MLA-viite (8. p.)Wallace, T. The Diagnosis of Mineral Deficiencies in Plants by Visual Symptoms: A Colour Atlas and Guide. 3a ed.
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