@book{34675, author = {Blair, Colby}, title = {Geographic information systems / }, publisher = {NY Research Press,}, year = {c2019.}, series = {Essential learning}, address = {Forest Hills, New York ::}, note = {Includes index.}, url = {http://library.cvsu.edu.ph/cgi-bin/koha/opac-retrieve-file.pl?id=dab18d9304038fb53174a7fb28050865} }