EARTHQUAKE PRECURSORS FROM EARTH TILT OBSERVATIONS CORRECTED FOR RAINFALLGERARD VB.1978; NATURE; GBR; DA. 1978; VOL. 276; NO 5684; PP. 169-170; BIBL. 6 REF.; 2 ILL.Article

NEW ZEALAND EARTH STRAIN MEASUREMENTSGERARD VB.1973; PHILOS. TRANS. R. SOC. LONDON, A; G.B.; DA. 1973; VOL. 274; NO 1239; PP. 311-321; BIBL. 8REF.; (DISCUSS. MEAS. INTERPRETATION CHANGES STRAIN EARTH; LONDON; 1972)Conference Paper

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