SC 13D · GOLD HILLS MINING, LTD. · Filed Jul 3, 2013
GOLD HILLS MINING LTD. - SCHEDULE 13D FOR DARBY INVESTMENT SERVICES INC.
PROMISSORY NOTE FROM DARBY INVESTMENT SERVICES INC. TO VOLODYMYR KHOPTA IN THE AMOUNT OF $56,141, DATED AS OF FEBRUARY 21, 2013