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Data base directions, the next steps

proceedings of the workshop of the National Bureau of Standards and the Association for Computing Machinery, at Fort Lauderdale, Florida, October 29-31, 1975

Such work usually follows the traditional approach in programming languages:
giving more meaning to data types by declaring their properties and constraining
their operations. For instance, in most languages one cannot multiply numbers ...

Proceedings

REFERENCES Achmad, S., Some notes on fisheries of Lake Djuanda, Jatiluhur.
1970 Rep. Inland Fish. Res. Stn., Jatiluhur, (2) : 1 - 12 — □ , Problems and
control of aquatic weeds in Indonesian open waters. In Proceedings of the first
1971 Indonesian Weed Science Conference. Bogor, January 29-31, 1971, pp.
107-13 Brehm, V., Die Cladoceren der Deutschen Limnologischen Sunda-
Expedition. 1933 Arch. Hydrobiol., Suppl. 11:631-771 Brown, M., The physiology
of fishes. Vol. 2.

Ecological Guidelines for Development in Tropical Rain Forests

Within the tropical forest regions there are a great number of forest types, and
other natural ecosystems, each containing its own combination of species
according to local differences of climate, soil, altitude and geological history. It is
highly important to conserve samples of each of these, sufficiently large to be self
-perpetuating and to encompass the range of the larger mammals and migratory
species. Particularly important is the conservation of samples of lowland rain
forest on fertile ...