Johnson, L. E. Geographic information systems in water resources engineering.
Chicago-čujuhus (17. p.)Johnson, Lynn E. Geographic Information Systems in Water Resources Engineering.
MLA-čujuhus (9. p.)Johnson, Lynn E. Geographic Information Systems in Water Resources Engineering.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.