April 1978	VOLUME 3	NUMBER 2	IJOEDY	(ISSN 0364-9059)

NONTECHNICAL CONTENT
		Front cover and table of contents
		Back cover
PAPERS
Douglas G. Pincock and Nicholas W. Easton		The feasibility of Doppler sonar fish counting		37
COMMUNICATIONS
Alyn C. Duxbury		Marine science education--Some inequities		41
Glenn N. Reid		Fabrication and test results of a conical acoustic lens		42
Morton Stimler		Opto-acoustic feasibility design of a conical acoustic lens		45
Wayne I. Sternberger and Lester R. Le Blanc		Short-range precision navigation and tracking system		48
W. L. Grantham, E. M. Bracalente, W. L. Jones, and J. W. Johnson		Correction to "The SeaSat-A satellite scatterometer"		51