Analyzing the structure of bureaucracy and the behavioral aspects of leadership. Budgetary processes and the control of public expenditure. Personnel Administration
This is your best bet. The Internet Archive has digitized many out-of-print public administration texts. You may need to "borrow" the book (one hour at a time with a free account). Search for "Public Administration by John M. Pfiffner, Ronald Press" on Archive.org. public administration by john m pfiffner pdf
You can often buy a physical 1st or 2nd edition of Public Administration for under $20. While not a PDF, owning the physical text allows you to scan it yourself for personal use. Analyzing the structure of bureaucracy and the behavioral