TY  - BOOK
AU  - Kovda,V.A.
ED  - International Congress of Soil Science
TI  - Biosphere, soils and their utilization: report of the President of the International Society of Soil Science 
AV  - S942 K68
PY  - 1974///
CY  - Moscow
PB  - All-Union Society of Soil Science, Institute of Agrochemistry and Soil Science
KW  - Conservación de suelos
KW  - Recursos naturales
N1  - Academy of Sciences of the USSR--Portada
ER  -