Results 121 to 130 of about 56,332 (307)

Elements traça en esfalerites i galenes del dipòsit de Cierco (Pb-Zn). Alta Ribagorça, Pirineu Central [PDF]

open access: yes, 2012
El diposit consisteix en dos filons E-W, tallats per un altre N-S. El rebliment filonia ès zonat amb esfalerita- galena-calcita als nivells profunds i galena-baritina als superiors.
Ayora, Carles   +1 more
core  

Performance of Indigenous and Introduced Slender Wheatgrass in Alaska, and Presumed Evidence of Ecotypic Evolution [PDF]

open access: yes, 1991
Objectives of this study were to evaluate forage and seed production, winter hardiness, and stand longevity of several collections of native Alaskan slender wheatgrass (Agropyron trachycaulum (Link) Malte), and to compare their performance with ...
Klebesadel, Leslie J.
core  

Elements traça en esfalerites i galenes del dipòsit de Cierco (Pb-Zn), Alta Ribagorça, Pirineu Central [PDF]

open access: yes, 1984
El diposit consisteix en dos filons E-W, tallats per un altre N-S. El rebliment filonia és zonat amb esfalerita- galena-calcita als nivells profunds i galena-baritina als superiors.
Ayora, Carles   +1 more
core   +1 more source

Alaska Energy Statistics 1960-2008 [PDF]

open access: yes, 2011
Prior to 1985, the federal Alaska Power Administration published the Alaska Electric Power Statistics. Then, the Alaska Energy Authority (formerly the Alaska Power Authority) began gathering statistical data and publishing this annual report.
Fay, Ginny   +3 more
core  

Pyrite flotation in the presence of galena. Study on galvanic interaction

open access: gold, 2017
Ebrahim Allahkarami   +2 more
openalex   +1 more source

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