The present guidelines describe a number of sampling methods, from arbitrary methods with a statistical background. They focus on sampling in cases where large
Written for students taking research methods courses, this text provides a thorough overview of sampling principles. The author gives detailed, nontechnical des
This comprehensive text provides clear explanations of the effects of drugs on human performance and the need for workplace drug testing. It provides essential
The use of drugs in food animal production has resulted in benefits throughout the food industry; however, their use has also raised public health safety concer