Log In
|
Register
Home
International
UK site
Who we are
About us
News & media
Annual report
Video
Consulting
Publishing
Jobs
Contact us
What we do
Technology areas
Energy
Shelter
Transport
Water & sanitation
Food & agriculture
Disaster mitigation
Climate change
ICTs
Programmes
Reducing vulnerability
Markets and livelihoods
Access to services
New technologies
Practical Answers
Technical enquiries
Campaigning
Policy & advocacy
Education
Where we work
Bangladesh
East Africa
Latin America
Nepal
South Asia
Southern Africa
Sudan
United Kingdom
Get involved!
Support us
Make a donation
Regular gift
Practical Presents
Local Groups
Challenge events
Campaign with us
Stop Climate Injustice
Make the Link
e-newsletter
Donate now
One-off donation
Regular donation
Practical Action sites
Practical Action UK
Soluciones Prácticas (Español)
Regional offices
Bangladesh
East Africa
Nepal
South Asia
Southern Africa
Sudan
Latin America
Spanish/Espanol
Practical Answers
Development Bookshop
Publishing
Consulting
Practical Presents
Education
Education resources
Sustainable Design
STEP
Climate Choices
African Voices
Search
Practical Answers Home
Technical Information Online
Technical Enquiry Service
Resource Centres
Technology Themes
Adaptation to climate change
Agriculture
Construction
Crop and food processing
Disaster mitigation & rebuilding
Energy
Information and communication
Manufacturing
Mining and minerals
Natural resource management
Transport
Waste and recycling
Water and sanitation
Media types
Technical Brief
Video
Engineering Drawings
Technical Notes
Contact Us
Advanced Search
-
Add to browser
Download list
You have no items in your download list.
Login
to save
your download list
.
Notifications
Notify me of updates to
Tell a friend
Tell someone you know about this article.
Sign In
email:
password:
Forgotten password?
Technical Information Online
Article not found!
Practical Action
|
Privacy Notice
|
Conditions of Use
|
Saturday 04 July, 2009
