Matches in Library of Congress for { ?s ?p Environmental protection Bulgaria.. }
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- 2001333224 subject "Environmental protection Bulgaria.".
- 74342362 subject "Environmental protection Bulgaria.".
- 76367244%2F%2Fr96 subject "Environmental protection Bulgaria.".
- 79394825%2F%2Fr86 subject "Environmental protection Bulgaria.".
- 82465605 subject "Environmental protection Bulgaria.".
- 85140734 subject "Environmental protection Bulgaria.".
- 86107657 subject "Environmental protection Bulgaria.".
- 86163509 subject "Environmental protection Bulgaria.".
- 87117029 subject "Environmental protection Bulgaria.".
- 90112121 subject "Environmental protection Bulgaria.".
- 94227102 subject "Environmental protection Bulgaria.".