Ammonia for Cooling and Heat Transfer
re: concentrator questions & clarifications 22 apr 1997
re: venturi(how to make??) 28 jul 1998
re: straw bale construction 26 sep 1998
anna edey's new solviva book... 6 nov 1998
re: how to naturally process pet manure 21 mar 2000
re: winter humidification wastes energy 12 feb 2005
re: efficiency of candles? 5 jul 2005
re: alternative septic system solutions 24 oct 2005