by G. A. Steven , D.Sc. , F.R.S.E. of the Marine Laboratory, Plymouth Dr. Steven explains how patient scientific investigation has revealed a different picture of the migrations of mackerel from that built up by tradition.
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by G. A. Steven , D.Sc. , F.R.S.E. of the Marine Laboratory, Plymouth Dr. Steven explains how patient scientific investigation has revealed a different picture of the migrations of mackerel from that built up by tradition.
