na INLIS000000000007818 20150708113741.0 979-497-915-5 0010-071500000000501 633.492 Ruk U Rukmana, H. Rakhmat Ubi Jalar : Budidaya dan Pascapanen / Rukmana, H. Rakhmat Cet. 2 Yogyakarta Kanisius 1997 Ubi jalar YOPDYOG 955-PK/B