What has the author Francis Perrott written?

Heli Perrett has written:

'Social feasibility in low-cost sanitation projects' -- subject(s): Outhouses, Sanitary engineering, Social aspects, Social aspects of Outhouses, Social aspects of Sanitary engineering

'The Safe Food Handbook'

'Human factors in project work' -- subject(s): Domestic Economic assistance, Economic development projects

'Using communication support in projects' -- subject(s): Communication in economic development, World Bank