TY - BOOK AU - Gertjan,de graaf TI - Geographic information systems in fisheries management and planning : : technical manual / SN - 9251049998 PY - 2003/// CY - Rome : PB - FAO Publishing , KW - Geographic information systems KW - Fishery management KW - Fishery management, International N1 - Includes bibliographical references (p.145-147) ER -