TEGRAM: a tutorial system on plane geometry based on TANGRAM

Genetic structure of sunflower (Helianthus annuus L.) subpopulations (control and...

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Isolation of a genomic sequence from Phanarochaete chrysosporimu with homology to...

Soybean international trade competitivity

Vitamin A nutritional status in children with acute respiratory infections and diarrheal...

Somatic embryogenesis in Pinus taeda L

Numerical procedures and estimation of covariance in multivariate analysis by the...