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Keywords:
IMPROVEMENT,
HARBOURS,
ENTRANCES,
WIND,
SAND,
SPITS,
CHANNELS,
WALLS,
TRAINING,
BARS,
DREDGING,
CONSTRUCTION,
PORTS,
WORKS,
CHANGE,
NATURAL,
CONDITIONS,
SHOALS,
CURRENTS,
NAVIGATION,
DREDGERS,
COSTS,
OTAGO,
NEW ZEALAND
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© Thomas Telford and ICE
1892
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