TY - BOOK AU - Monroe,Jeffrey W. TI - Marine radionavigation and communications SN - 0870335103 (hc) AV - VK397 .M66 1998 .M66 1998 U1 - 623.89/32 21 PY - 1998/// CY - Centreville, Md. PB - Cornell Maritime Press N1 - Includes index ER -