material

material is a Binary Relationship Type.

H2O, adobe, and salt are kinds of material.

23 photos of material

photo #3934
photo #778
photo #2772
photo #3899
photo #3907
photo #3992
photo #3993
photo #3994
photo #4001
photo #4286
photo #169
photo #173
photo #3931
photo #771
photo #3911
photo #3912
photo #3924
photo #4288
photo #4292
photo #161
photo #163
photo #168
photo #162