PT - JOURNAL ARTICLE AU - Hazen, H. A. TI - Two balloon-voyages AID - 10.1126/science.ns-9.228.591 DP - 1887 Jun 17 TA - Science PG - 591--592 VI - ns-9 IP - 228 4099 - http://science.sciencemag.org/content/ns-9/228/591.short 4100 - http://science.sciencemag.org/content/ns-9/228/591.full SO - Science1887 Jun 17; ns-9