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Down to earth : speeches and writings of His Royal Highness Prince Philip Duke of Edinburgh; on the relationship of man with his environment
Philip <Edinburgh, Herzog>, (1988)
Legal rules on the protection of animals in hungary
Paulovics, Anita, (2013)
The economic importance of the conservation of biological diversity in the Federal Republic of Germany : contributions toward an evaluation and cost analysis
Weisser, Christian F., (1993)