Shows coastal and mountain terrain in natural colour relief & cross section diagram of the substance of a typical volcano.
Complete with lesson plan, size 60 x 45 cm
Showing upper level of an underground surface in which soil or rock is permanently saturated with water.
The water table separates the underground water zone from the capillary fringe or zone of aeration.
For withdrawing soil samples of consistent volume from a deep, continuous core.
Cadmium plated sample cylinder with serrated cutting edge with wooden handle.
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