An official website of the United States government
Here's how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Effect on mallard embryos of eggshell applications of varying amounts of No. 2 fuel oil, South Louisiana crude oil, Kuwait crude oil, and a paraffin mixture. Measured survival and hatching weight.