00581nam a22001697a 450000500170000002000180001708200210003510000270005624500700008326000430015330000090019650400190020565000540022494200120027899900190029095201020030920260226140813.0  a9781639894376  223a910.285bWAL  aWalker, Melissa911063  aPrinciples of Geographical Information Systems /cMelissa Walker   aUSA :bStates Academic Press ,c2022 .  a237p  aiNclude Index   aInformation Storage and Retrieval Systems 911064  2ddccBK  c757127d757127  00102ddc4070aESbESd2026-02-26l0o910.285 WALpES2525r2026-02-26 08:40:18w2026-02-26yREF