Ist International Congress Soil Sc. (Proceed) June 13-22 1927
American Org. Commtt.
Ist International Congress Soil Sc. (Proceed) June 13-22 1927 - American Org. Commtt. C.S.R.S., Pusa 1928 - 914
631.405 / P86
Ist International Congress Soil Sc. (Proceed) June 13-22 1927 - American Org. Commtt. C.S.R.S., Pusa 1928 - 914
631.405 / P86