CHARACTERISTICS AND ANALYSIS OF SHALLOTS FARMING IN DOLOK SILAU SIMALUNGUN, NORTH SUMATRA oleh Tumpal Sipahutar, Shabil Hidayat, Moral Abadi Girsang, Lermansius Haloho, Sarman Paul Lumbantobing, Sortha Simatupang, Palmarum Nainggolan, Perdinanta Sembiring, melda S Marpaung, Delima Napitupulu