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4967-1968, . (1969). RECOMMENDATIONS FOR SEISMIC INSTRUMENTATION FOR RIVER VALLEY PROJECTS. DELHI: ISI.
4967-1968, . 1969. RECOMMENDATIONS FOR SEISMIC INSTRUMENTATION FOR RIVER VALLEY PROJECTS. DELHI: ISI.
4967-1968, . RECOMMENDATIONS FOR SEISMIC INSTRUMENTATION FOR RIVER VALLEY PROJECTS. DELHI: ISI. 1969.