Untung berlipat dari budidaya lada : tanaman multi manfaat / RUKMANA, Rahmat text Yogyakarta : Lily Publisher, 2018 ind bibl. p. 121 -123 bibl. p. 121 -123 PIPER NIGRUM PLANT ANATOMY VARIETIES CULTIVATION POSTHARVEST TECHNOLOGY ECONOMIC ANALYSIS URN:ISBN:978-979-29-6758-6