Fertilizers, crop quality and economy proceedings of a study week on the use of fertilizers and their effect on crop growth, with emphasis on quality and economy, [at the Pontifical Academy of Sciences, Vatican City], April 10th-16th, 1972
Fernandez, Valentin Hernando.
Amsterdam Oxford Elsevier Scientific
1974
English text, English and French introduction, conclusions in French, German, Italian and Spanish
Includes bibliographies
Field crops