Observations on the planned provision of nitrogen fertilizer for the world
Tinbergen, Jan
Observations on the planned provision of nitrogen fertilizer for the world - Leiden : H. E. Stenfert Kroese, 1956. - 45 p. ; 18 cm. - Netherlands economic institute .
Observations on the planned provision of nitrogen fertilizer for the world - Leiden : H. E. Stenfert Kroese, 1956. - 45 p. ; 18 cm. - Netherlands economic institute .