Some reports issued in 2 editions having the same report number. The reports designated "T" are technical in content. Others in only one edition may be either "T" reports or popular studies. The set here cataloged includes both editions. Some numbers issued in revised editions.
OCLC:
(OCoLC)13800888
LCCN:
sn86029832
Locations:
USUX851 -- Iowa State University - Parks Library (Ames)
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.