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Santosa, Budi and Wignyanto, Wignyanto and Hidayat, Moh. Nur and Sucipto, S Similarity Optimization of NaOH concentration and trichloroacetic acid in bacterial carboxymethylation cellulose. Rynnye Lyan Resources, Surabaya.
Santosa, Budi and Wignyanto, Wignyanto and Hidayat, Moh. Nur and Sucipto, S Similarity The quality of nata de coco from sawarna and mapanget coconut varieties to the time of storing coconut water. Rynnye Lyan Resources, Surabaya.