Guide leaflet, geological science field trip, Greenville area, Bond and Montgomery counties : Greenville, Hillsboro, Mt. Olive, and New Douglas quadrangles /

"October 20, 1962."

Guide leaflet, geological science field trip, Peoria area : Peoria, Fulton and Tazewell Counties, Peoria, Canton, Glasford, Dunlap, Elmwood, and Maquon quadrangles /

September 22, 1962.

Guide leaflet, geological science field trip, Fulton area : Carroll and Whiteside Counties, Clinton and Savanna quadrangles /

September 13, 1958.

Guide leaflet, geological science field trip, Macomb area : McDonough County, Macomb and Colchester quadrangles /

May 9, 1953.

Guide leaflet, geological science field trip, Rosiclare area : Hardin County, Golconda, Cave in Rock, Shawneetown, and Equality Quadrangles /

April 12, 1958.

Leaflet.

Includes revisions.

Nature leaflet

At head of title, no. 1- : Commonwealth of Massachusetts. State board of agriculture

Cornell science leaflet

Mode of access: Internet.

Cornell science leaflet.

Mode of access: Internet.

Bulletin. Nature Study Leaflet

Mode of access: Internet.

Guide leaflet, geological science field trip, Bloomington-Normal area : McLean County, Danvers, LeRoy, McLean, and Normal quadrangles /

May 4, 1957.

Guide leaflet, geological science field trip, Lawrenceville area : Lawrence and Crawford Counties, Birds, Vincennes, Sumner and Hardinville Quadrangles /

April 13, 1957.

Guide leaflet, geological science field trip, Port Byron area : Rock Island County, Port Byron, Cordova and Erie quadrangles /

September 17, 1955.

Extension Leaflet

Mode of access: Internet.