ROBERT. (1978). Fundamentals Of Plant Pest Control Robert. W.H. Freeman.
Lua i Stíl Chicago (17ú heag.)ROBERT. Fundamentals Of Plant Pest Control Robert. W.H. Freeman, 1978.
Lua MLA (8ú heag.)ROBERT. Fundamentals Of Plant Pest Control Robert. W.H. Freeman, 1978.
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