Nutrient, bacterial, and virus control as related to ground-water contamination /

"July 1977."

Rapid assessment of potential ground-water contamination under emergency response conditions /

Mode of access: Internet.

U.S. Atomic Energy Commission reports on elemental fluorine /

"TID-3507 Chemistry."

Contamination of ground water by pesticides [microform] : hearing before the Subcommittee on Investigations and Oversight of the Committee on Public Works and Transportation, House of Representatives, One Hundredth Congress, second session, August 11, 1988.

"100-78."

Beneath the bottom line : agricultural approaches to reduce agrichemical contamination of groundwater : summary.

"OTA-F-417"--P. [4] of cover.

Measurement of vehicle contamination by exhaust gases. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Handbook for contamination control on the Apollo program.

"NASA issuance NHB 5300.3. Apollo documentation no. RA-027-001-1A."

Programa de un curso elemental de física y nociones de química /

Mode of access: Internet.

Curso elemental de física /

Contiene: Tomo 1 - Tomo 2 - Tomo 3.

Curso de química elemental e industrial /

Contiene: vol. 1 - vol. 2.

Tratado elemental de matemáticas para uso de los caballeros seminaristas del Real Seminario de Nobles de Madrid y demás casas de educación del reino.

Mode of access: Internet.

Tratado elemental de matemáticas para uso de los caballeros seminaristas del Real Seminario de Nobles de Madrid y demás casas de educación del reyno.

Mode of access: Internet.

Tratado elemental de aritmética /

T. 1.

Tratado elemental de aritmética /

T. 1.

Curso completo elemental de matemáticas puras.

Mode of access: Internet.