Studies for the purification of isopropyl alcohol.

"Contract no.14-17-0007-888"--pt. 1, "Contract no.14-17-0007-976"--pt.2

Agricultural policy analysis and planning : a summary of two recent analyses of A.I.D.-supported projects worldwide /

"August 1988."

Chemical analyses of Texas rocks and minerals /

Includes tables.

Population redistribution and economic growth: United States, 1870-1950 /

Includes bibliographical references.