(1988). Identification codes for organizations listed in computerized data systems of the U.S. Geological Survey [by Cassandra D. Blackwell]. [microform].
Tohutoru Kātū Chicago (17th ed.)Identification Codes for Organizations Listed in Computerized Data Systems of the U.S. Geological Survey [by Cassandra D. Blackwell]. [microform]. 1988.
Tohutoro MLA (9th ed.)Identification Codes for Organizations Listed in Computerized Data Systems of the U.S. Geological Survey [by Cassandra D. Blackwell]. [microform]. 1988.
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