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action research activities alleviation of drudgery appropriate technologies biogas Ceneral cent level cent of home cent of middle cleaning Coimbatore cooking Deep frying Delhi Devadas Development device drudgery alleviation Economic and Employment Effect of stress employed and full employed home makers employment status environment equipment ergonomical conditions Experienced by Home family members fatigue fireless cooker food purchase food related fuel full time home group home makers hay box haybox home making experience Home Science household improve improvisation of ergonomical income group home kitchen LIC home maker low and middle low income group macro factors makers in meal meal preparation mental stress Micro middle income group Mother Teresa overcome drudgery physical PM PM PM ro programmes ro PM ro ro Rural Science and Technology significant difference simplification methods smokeless chulah storage Table tasks utensils women