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1. Correspondence, 1971-01-28. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 1970-1971
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 1970-1971

2. Correspondence, 1989-12-21. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 1989-1990
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 1989-1990

3. Correspondence, 1992-10-19. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 1992-1993
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 1992-1993

4. Correspondence, 1993-01-28. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 1992-1993
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 1992-1993

5. Correspondence, 1993-08-25. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 1992-1993
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 1992-1993

6. Correspondence, 1995-10-28. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 1995-1996
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 1995-1996

7. Correspondence, 1996-05-15. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 1995-1996
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 1995-1996

8. Correspondence, 1996-06-13. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 1995-1996
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 1995-1996

9. Correspondence, 1996-07-28. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 1995-1996
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 1995-1996

10. Correspondence, 1997-07-10. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 1996-1997
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 1996-1997

11. Correspondence, 1997-09-04. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 1997-1998
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 1997-1998

12. Correspondence, 1998-06-09. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 1997-1998
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 1997-1998

13. Correspondence, 1999-07-15. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 1998-1999
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 1998-1999

14. Correspondence, 2000-06-28. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 1999-2000
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 1999-2000

15. Correspondence, 2001-05-22. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495a, 2000-2001
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 2000-2001

16. Correspondence, 2001-05-22. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 2000-2001
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 2000-2001

17. Correspondence, 2001-09-12. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 2001-2002
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 2001-2002

18. Correspondence, 2001-09-12. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495a, 2001-2002
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 2001-2002

19. Correspondence, 2002-05-07. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495A, 2001-2002
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 2001-2002

20. Correspondence, 2002-05-08. Pollution and Water Resources: Scientific and Institutional Aspects, seminar 495a, 2001-2002
Seminar 495A
- Name: Seminar 495A
- Collection Name: University Seminars records
- Date: 2001-2002