Ecce and Old Earth

Sequel to Araminta Station. It was just an old piece of paper. The original Title Deed and Charter that preserved for all time the unspoiled wilderness beauty ofthe planet Cadwal: no human settlement, no mining or commercial development. No interference with the teeming variety of its native life forms. But now the Charter had gone missing from the archives on Old Earth - just as an unholy conspiracy of the greedy and the unscrupulous campaigned to open up Cadwal to unlimited exploitation. Glawen Clattuc from Araminta Station and tantalising Wayness Tamm find themselves charged with the alarming task of tracking down the missing Charter, thwarting a galaxy-wide plot and saving a planet...

Synopsis from Open Library.