Stable carbon isotope variation in C3 and C4 plants along the Amazon River.Published in:Nature, 1991, v. 353, n. 6339, p. 57, doi. 10.1038/353057a0By:Martinelli, L.A.;Devol, A.H.Publication type:Article
Direct measurement of nitrogen gas fluxes from continental shelf sediments.Published in:Nature, 1991, v. 349, n. 6307, p. 319, doi. 10.1038/349319a0By:Devol, A.H.Publication type:Article