Description

Letter to M. Klein from H. Takahashi, President, dated 10/17/1977; "NEC's Activities in Ocean Electronics"; Ocean Developments of NEC; NS-74 Precision Deep Sea Echo Sounder product data; Stabilized Narrow Beam Echo Sounder Model NS-105 product data; NE-70B Bottom Sonar (Side-Looking Sonar) product data; NE-19C Geo Sonar (Spark Type) product data; Miscellaneous article