Using the quick search there are shown up to three reports about produced:
Anthropologists from Wheaton College (Illinois) and The Field Museum have discovered how the ancient Maya produced an unusual and widely studied blue pigment that was used in offerings, pottery, mural...
Biowissenschaften Chemie |Mechanoluminescence is light generated when a crystal, such as sugar or quartz, is fractured by grinding, cleaving or via other mechanical means. Sir Francis Bacon wrote about this phenomenon as early...
Biowissenschaften Chemie |Using the fulltext-search for the word produced you can set up serveral searching-options > choose search options