Bibliography

International Baccalaureate, "Physics Higher Level Data Packet", Second Revised Edition: January 1998, International Baccalaureate Organisation: Geneva; 1998

Dillon, Thomas, Franklin Miller, Malcolm Smith, 
Concepts in Physics,  Harcourt Brace Jonanovich, Inc.; 

"Viscosity",
Encarta Encyclopedia, Microsoft:  1996

Furtado, Pete, 
Physics In Everyday Life, Volume 13, The World of Science, Andromeda Oxford Ltd; Oxfordshire:  1991