July 1984	VOLUME 9	NUMBER 3	IJOEDY	(ISSN 0364-9059)

 SPECIAL ISSUE ON Extremely low frequency (ELF) communications

NONTECHNICAL CONTENT
		Front cover and table of contents
		Back cover
GUEST EDITORIAL
Michael L. Burrows		Special issue on ELF communications: Guest editorial		125
INVITED PAPERS
Melvin W. Dill		ELF ground design and installation		128
Joseph O. Enk and Martin M. Abromavage		Exposure to low-level extremely low frequency electromagnetic fields near naval communications facilities		136
Michael F. Genge and Ralph D. Carlson		Project ELF electromagnetic compatibility assurance program--A status report		143
Peter R. Bannister		New simplified formulas for ELF subsurface-to-subsurface propagation		154
Yan-Shek Hoh		Propagation prediction for the Navy Extremely Low Frequency (ELF) program		164
Peter R. Bannister		ELF propagation update		179
Peter R. Bannister		Summary of ELF propagation validation system field strength measurements, 1976 to 1978		189
Peter R. Bannister		Summary of ELF propagation validation system effective noise measurements, 1976 to 1978		196
Raymond F. Ingram		Performance of the locally optimum threshold receiver and several suboptimal nonlinear receivers for ELF noise		202
INVITED COMMUNICATIONS
Anthony B. Bruno		Electromagnetic field measurements at 60 Hz in the sea near Montauk Point, NY, and New London, CT		209
Mario D. Grossi		Spaceborne long vertical wire as a self-powered ULF/ELF radiator		211
PAPERS
Peter H. Dahl and Ole A. Mathison		Some experiments and considerations for development of Doppler-based riverine sonars		214
COMMUNICATIONS
G. W. Jackson and David L. Wilkinson		Long water waves and electromagnetic waves--An analogy		218