Using the quick search there are shown up to three reports about contamination of spinach:
Kansas State University surveyed 2,000 people by mail in Wichita, Kan., and Los Angeles – 1,000 in each city – to find out their reactions to various food safety situations. About 30 percent responded...
Agrar- Forstwissenschaften |Using the fulltext-search for the word contamination of spinach you can set up serveral searching-options > choose search options