Information Retrieval LTd., 1979. May-August 1979 - Vol. 9. Hardcover/paperback. Abstracts #9(May-August is a bound hardcover volume) (Volume 9. Nos. 10, 11, 12 are paperback individually bound): Biological Sciences and Living Resources; an international information journal for the science, technology, and management of marine and freshwater environments. (more volumes available).
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