Publication

1988 - U.S. G.P.O., Washington, District of Columbia

Language

English

Word Count

20,500 words, Guess

Page Count

82 pages

Identifiers

Classifications

  • DDC551.8/7
  • LCCQE606.5.U6 M33 1988

Subjects

Series Statement

  • U.S. Geological Survey professional paper ;
  • 1440

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