March List of earthquakes in 1968
^ m 6.3 - mindanao, philippines . united states geological survey. march 5, 1968. retrieved may 13, 2017.
^ m 6.1 - mindanao, philippines . united states geological survey. march 5, 1968. retrieved may 13, 2017.
^ m 6.3 - new britain region, papua new guinea . united states geological survey. march 7, 1968. retrieved may 13, 2017.
^ m 6.4 - tonga . united states geological survey. march 11, 1968. retrieved may 13, 2017.
^ significant earthquake: kenya: homa bay, usiri, got kokech . national geophysical data center. march 20, 1968. retrieved may 17, 2017.
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