Annotation Papers presented at the Twelfth ASTM Symposium on [title], held in San Diego, California, October 1991. The volume is divided into four sections: novel surfactants and their properties (four papers); pesticide formulation technologies (14 papers); pesticide packaging and management (one paper: Container Design and "Glug"); and pesticide application technologies (eight papers). Annotation copyright by Book News, Inc., Portland, OR.