Reference materials
special reference material
Geologists reference a material's density in reference to it's weight. Density is the material's weight divided by the weight of an equal volume of water.
Geologists reference a material's density in reference to it's weight. Density is the material's weight divided by the weight of an equal volume of water.
Library/museum material and Reference or exhibit materials
Library/museum material and Reference or exhibit materials
Not in any of the reference material I have.
Non-record material
Reference or exhibit materials
Reference or exhibit materials
Special reference material is anything that gives background information about a specific topic. Some examples include almanacs, atlases, bibliographies, dictionaries, and encyclopedias.
Apparent relative density is a measure of the density of a material compared to the density of another reference material, typically water. It is calculated by dividing the apparent mass of the material by the mass of an equal volume of the reference material. Apparent relative density does not take into account the presence of any voids or pores in the material.
That is the correct spelling of "reference" (a source or allusion to material).