MOVEMENTS OF THE CENTER OF COAL MINING IN THE APPALACHIAN PLATEAUS

被引：6

作者：

Murphy, Raymond E.

Spittal, Hugh E.

机构：

来源：

关键词：

D O I：

10.2307/210800

中图分类号：

P9 [自然地理学]; K9 [地理];

学科分类号：

0705 ; 070501 ;

摘要：

引用

页码：624 / 633

页数：10

共 15 条

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[2]

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[3]

EAVENSON HN, 1943, GEOGR REV, V33, P164

[4]

FRASER CE, 1932, ANAL OUR IND, P369

[5]

FRITZ WG, 1935, U PITTSBURGH BUR BUS, V4

[6] Coal Mining in the South [J].

Kiessling, O. E. .

[7] A New Production Map of the Appalachian Bituminous Coal Region [J].

Murphy, Raymond E. ;

Spittal, Hugh E. .

[8]

SAYERS RR, 1945, COMMUNICATION

[9] THE CENTROGRAPHICAL METHOD AND REGIONAL ANALYSIS [J].

Sviatlovsky, E. E. ;

Eells, Walter Crosby .

[10]

TRYON FG, 1936, MIGRATION EC OPPORTU, P54