21. Books on cartography and the history of mapmaking do not mention the four-color property . 22. He made significant advances in mapmaking , producing maps that were far more accurate than previously available. 23. In the Middle Ages, Muslim scholars continued and advanced on the mapmaking traditions of earlier cultures. 24. Choyce had ten years in the air conditioning business and was unprepared for the challenges of mapmaking . 25. "' Pietro Vesconte "'( Catalan mapmaking throughout the fourteenth and fifteenth centuries. 26. It is unknown whether the Haarlem and Gouda Cornelis Visschers were related to the Amsterdam mapmaking family. 27. The law mandates the use of raw population numbers on which to base Virginia's political mapmaking . 28. If it does, state legislatures will be able to choose which set to base their mapmaking on. 29. This mapmaking is a critical part of representative democracy, the insurance that every vote carries equal weight. 30. The initial volume addressed mapmaking in Europe and the Mediterranean, in prehistoric, ancient and medieval periods.
