Maarsseveense plassen, Hydrologische en ... - HSV Maarssen
Maarsseveense plassen, Hydrologische en ... - HSV Maarssen
Maarsseveense plassen, Hydrologische en ... - HSV Maarssen
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1962 – 2012 Slibophoping Grote Plas<br />
Org. materiaal 90.000 kg<br />
Fosfaat 1.200 kg P<br />
Fe <strong>en</strong> Mn 27.000 kg<br />
CaCO 3 (kalkwater) ??<br />
??