کتاب های John V Van Sickle
Introduction to Economics
John V Van Sickle, 1954
Basic GIS Coordinates
Jan Van Sickle, 2004
Basic GIS Coordinates
Jan Van Sickle, 2004
Basic GIS Coordinates, Second Edition
Jan Van Sickle, 2010
GPS for Land Surveyors
Jan Van Sickle, 2008
GPS for land surveyors
Van Sickle, Jan, 2015
Basic GIS coordinates
Jan Van Sickle, 2017
