Ecology conference with international participation
Subtitle: "stable development and ecology, XXI Century," abstracts of the report
By: Association of Bulgarian Ecologists.
Publisher: The Association
Published: 1991
Place of publication: Sofia
Language: eng
Number of pages: 115
Subjects: Environmental monitoring -- Europe, Eastern -- Congresses.; Environmental protection -- Europe, Eastern -- Congresses.; Human ecology -- Europe, Eastern -- Congresses.; Europe, Eastern -- Environmental conditions -- Congresses.