This report presents a simple methodology for calculating cross-price elasticities across countries, using the Frisch own-price elasticity. Cross-price elasticities are calculated for 9 major consumption categories from the 1996 International Comparison Program data across 114 countries. The...

The xylem resin of more than 5,700 Pinus ponderosa Laws. trees at 68 locations in Western United States was analyzed in a 9-year study. The quantity of the five major components-a-pinene, ,8-pinene, 3-carene, myrene, limonene-of the monoterpene portion of individual trees varied widely over the...

Of some 2,800 compounds screened for repellency against Aedes aegypti mosquitoes, 592 were initially effective. 164 were equal to the dimethyl phthalate standard, 33 were as good as the deet. The protection time and minimum effective dosage (MED) of each compound are given.