Annual report. - Pennsylvania State College; Pennsylvania State College. Agricultural Experiment Station; Pennsylvania State College. Dept. of Instruction (Harrisburg : State Printer)
"The building materials of Pennsylvania. I. Brownstones, by Thomas C. Hopkins": Annual report ... 1896. Appendix. "Clays and clay industries of Pennsylvania. I. Clays of western Pennsylvania (in part) ... By Thomas C. Hopkins": Annual report ... 1897. Appendix. II. "Clays of southeastern Pennsylvania (in part) ... By Thomas C. Hopkins": Annual report ... 1898/99. Appendix. III. "Clays of the Great Valley and South Mountain areas ... By Thomas C. Hopkins": Annual report. 1899/1900. Appendix.
Title varies.
1886 includes reprints of Bulletins no. 1-16, Nov. 15, 1882-Nov. 15, 1886 (agricultural experiments).
1887- in two parts; pt. I. Departments of instruction; pt. II. Agricultural experiment station.
Report year irregular.
Mode of access: Internet.
Keywords: Agricultural extension work -- Pennsylvania