The National Association of College Stores reported more than five billion dollars in sales of textbooks and course materials.

VOA: special.2009.09.03

Ships no longer in use contain dangerous materials which can be released into the environment when they are taken apart.

VOA: special.2009.04.27

One reason is that heat from the sun can go through many of the building materials commonly found in cities.

VOA: special.2010.03.02

It says for every ten dollar necklace sold, the beader gets two dollars and forty-three cents in money or materials.

VOA: special.2010.06.28

So far,their findings have included pieces of a brick that could be from building materials used in colonial times.

VOA: special.2009.08.17

That was Governor Arnold Schwarzenegger in June, talking about his effort to get schools to use materials available free online.

VOA: special.2009.08.27

Progress on a work plan for securing nuclear materials can be discussed when South Korea holds the next summit in two years.

VOA: special.2010.04.17

During the next twelve months the team will study the effectiveness of these materials in home building.

VOA: special.2009.10.05

Miz Teutonico's team will study materials used in the paintings in an effort to solve the mystery.

VOA: special.2009.12.15

Metal detectors cannot be used in many cases because landmines can be made of non-metal materials.

VOA: special.2010.05.03

For example,Kahn was very interested in the look and feel of the materials he used.

VOA: special.2009.12.13

For example, they are reusing materials and heating buildings in a more environmentally friendly way.

VOA: special.2009.06.03

Root beer can be made with the materials that are readily available in America.

VOA: special.2011.08.01

Also,the Spanish introduced materials and methods used in Europe, including the potter's wheel.

VOA: special.2009.09.09