Tennessee Valley Authority & U. S. Agency for International Development. (1969). Fertilizer production, marketing, and use ; a handbook for short courses. s.n.
Cita Chicago (17th ed.)Tennessee Valley Authority i U. S. Agency for International Development. Fertilizer Production, Marketing, and Use ; a Handbook for Short Courses. Muscle Shoals, Ala: s.n, 1969.
Cita MLA (9th ed.)Tennessee Valley Authority i U. S. Agency for International Development. Fertilizer Production, Marketing, and Use ; a Handbook for Short Courses. s.n, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.