共 8 条
[1]
CAROLAN W, 1971, ENCYCLOPEDIA AM YB, P549
[2]
CAROLAN W, 1968, ANNUAL REPORT, P8
[4]
LOCKWOOD A, 1969, DIAGRAMS
[5]
ROWLEY G, 1973, GEOGRAPHICAL MAGAZIN, V45, P344
[6]
Tobler W, 1973, GEOGR ANAL, V3, P262
[7]
Tobler W R, 1973, Ann N Y Acad Sci, V219, P215, DOI 10.1111/j.1749-6632.1973.tb41401.x
[8]
*U MICH CART LAB, 3 REP