Bill Mollison videos

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'Passive Solar Greenhouse Design Pt 2/3: Heating, Glazing and Ventilating Greenhouses'
'Passive Solar Greenhouse Design Pt 2/3: Heating, Glazing and Ventilating Greenhouses' 23:55 May 19, 2021
'Passive Solar Greenhouse Design - Get the pieces talking. Pt 3/3'
'Passive Solar Greenhouse Design - Get the pieces talking. Pt 3/3' 11:35 Jan 15, 2021