11.  Greenspan also spoke of small-business development as a principal means of household asset accumulation.

12.  In Belgium, Germany, and Australia this is the principal means of distribution.

13.  In most of China, private minibuses are now the principal means of getting from one town to another.

14.  Synapses also are the principal means by which the brain records memory and coordinates movement.

15.  The principal means of control for that type is prophylactic antibiotic treatment of people who might come in close contact with an infected person.

16.  The United Nations said providing education, particularly elementary education, was the principal means of preventing and eliminating child labor in India.

17.  The state commission for family planning said that aside from awareness of contraception, education and economic development are the two principal means of limiting the number of births.

18.  The bicycle is the principal means of transport in Jaffna, where car traffic is almost inexistant, except for some buses and camouflaged vehicles belonging to the Tigers.