‘AMS/EHAM/Elev./Minus/13ft//Ref./52°/18’/31N/4°/45’/50E:/Amsterdam/Airport/Schiphol/of/Waar/Te/Landen,/1916-2006’. 2006. OverHolland 2 (4): 43-65. https://doi.org/10.7480/overholland.2006.4.1599.