The evidence for the increase in numbers is in
Hardoy
,
Jorge E
,
Diana Mitlin
and
David Satterthwaite
(2001), Environmental Problems in an Urbanizing World:
Finding Solutions for Cities in Africa, Asia and Latin America,
Earthscan Publications, London
, 470 pages.
3.
UNCHS (Habitat)
(2001), Cities in a Globalizing World,
Earthscan Publications, London
, page 14.
4.
also
Hardoy
,
Ana
and
Ricardo Schusterman
(2000),
“New models for the privatization of water and sanitation for the
urban poor”
, Environment and Urbanization Vol 12, No
2, October pages
63-75
.
5.
See in particular Vol 10, No 2 and Vol 11, No 2.
6.
also
López Follegatti, Jose Luis
(1999),
“Ilo: a city in transformation”
, Environment and Urbanization Vol 11, No
2, October pages
181-202
.
