ROBINSON, A., & Sale, R.. (1978). Elements of Cartography (4th.). John Wiley & sons, Inc..
Chicago-čujuhus (17. p.)ROBINSON, ARTHUR, juo Randall Sale. Elements of Cartography. 4th. CANADA: John Wiley & sons, Inc., 1978.
MLA-čujuhus (9. p.)ROBINSON, ARTHUR, juo Randall Sale. Elements of Cartography. 4th. John Wiley & sons, Inc., 1978.
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