Items where Author is "Hutapea, Johnny Ria"

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Monograph

Hutapea, Johnny Ria and Sutjipto, Sutjipto and Purba, Anny Victor (1985) Laporan Penelitian Beberapa Perlakuan Kultivasi Thymus Vulgaris L. 1984/1985. Project Report. Pusat Penelitian dan Pengembangan Farmasi, Jakarta. (Unpublished)

Sugiarso, Sugeng and Hutapea, Johnny Ria and Djumidi, Djumidi and Sutjipto, Sutjipto (1983) Laporan Penelitian Kultivasi Tanaman Sonchus Arvensis L. Project Report. Balai Penelitian Tanaman Obat Tawangmangu, Jakarta. (Unpublished)

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