TY  - GEN
AU  - Paul, E.A
TI  - Soil organic matter in temperate agroecosystems: long - term experiments in North America
SN  - 0849328020
U1  - 631.417097 
PY  - 1996///
CY  - Boca Raton
PB  - CRC Press
KW  - Agriculture
ER  -