EPA 625/1.

Description based on: 74-006.

EPA-600/9.

Description based on: 75-001a.

EPA-600/8.

Description based on: 76-001a.

EPA-600/6.

Description based on: 74-002.

EPA-560/1.

Description based on: 75-002; title from cover.

EPA-600/4.

Description based on: 75-001.

EPA 540/9.

Description based on: 76-001; title from cover.

EPA-540/R.

Description based on: 92/001.

EPA-430/9.

Description based on: 73-006 (July 1973).

EPA 550/9.

Description based on: 74-001.

EPA-600/K.

Description based on: 92/006; title from cover.

EPA GAD.

Description based on: 2-77-010; title from cover.

EPA-R5.

Description based on: 72-001.

Proceedings of the International Symposium on Ecological Aspects of Tree-Ring Analysis, August 17-21, 1986, Marymount College, Tarrytown, New York /

Mode of access: Internet.

EPA-440/9.

Description based on: 73-001; title from cover.