What is the fine-grained topic of the following text: Part II of a series of reports of studies on the effects of packing-house equipment, plant layout, and work methods on efficiency and costs made co-operatively by the University of California Guanine Foundation of Agricultural Economics, and the Bureau of Agricultural Economics, United States Department of Agriculture, under the authority of the Research and Marketing Act, Detailed reports in mimeograph form are available by addressing a request to Giannini Foundation, 207 Giannini Hall, University of California, Berkeley 4. Only return the topic.
Studies on the effects of packing-house equipment, plant layout, and work methods on efficiency and costs.