Klicka på en bild för att gå till Google Book Search.
Laddar... 90 years and 535 miles: Vegetation changes along the Mexican borderav Robert R. Humphrey
Ingen/inga Laddar...
Gå med i LibraryThing för att få reda på om du skulle tycka om den här boken. Det finns inga diskussioner på LibraryThing om den här boken. Inga recensioner inga recensioner | lägg till en recension
Between 1892 and 1894, 258 monuments were erected and photographed along the Mexican border with El Paso and the Pavific Ocean. Their original purpose was to serve as unalterable evidence in the boundary and rights-of-access disputes. Professor Humphrey has found a new use for this border survey. By comparing the original photos with his own repeat photos made approximately 90 years later, he has been able to determine the kinds and amount of vegetation changes that have occured over this time period. Inga biblioteksbeskrivningar kunde hittas. |
Pågående diskussionerIngen/inga
Google Books — Laddar... GenrerMelvil Decimal System (DDC)581.97Natural sciences and mathematics Plants Specific topics in natural history of plants Geographic North AmericaKlassifikation enligt LCBetygMedelbetyg: Inga betyg.Är det här du? |