A collection of abstracts summarizing technical articles related to the instrumentation and automation of wastewater treatment plants was developed by the authors. This literature search encompassed most recognized environmental, instrument, and automatic control periodicals, symposium series, and conference proceedings published from 1967 to 1973. Approximately 600 abstracts collected during this investigation are classified according to the following four categories: instruments, control experiences and strategies, costs, and support material. These categories are further refined into numerous subcategories. For the reader's convenience, the abstracts are grouped according to the subcategories. Each entry contains a title, author, bibliographic citation, abstract, and keywords, respectively. An author index and source list are also included. (Modified author abstract)