TY  - BOOK
AU  - International, Society of Soil Science.
TI  - Transactions of 7 th International Congress of Soil Science,Madison, U.S.A. : Vol. 4
U1  - 631.4ISS 
PY  - 1960///
PB  - I:nternational Society of Soil Science, Madison Wisc., U.S.A.
ER  -