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Inhibiting Factors of Land Suitability for Piper nigrum L. in a Hilly Area of Tirtomoyo District, Central Java. j Trop. Soils [Internet]. 2020 Jan. 2 [cited 2025 Oct. 29];25(1):29-37. Available from: https://journal.unila.ac.id/index.php/tropicalsoil/article/view/330