Impacts of motorized boat size on small-scale fishermen income in Langkat, North Sumatera text Bogor Center for Agro Economic Research 1987 vii, 68 p. ill.; 30 cm. PENDAPATAN NELAYAN 639.2.057/CEN/i 639.2.057/CEN/i INLIS000000000005375 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)