TY  - JA
AU  - Babalola,O.
AU  - Lal,R.
TI  - Subsoil gravel horizon and maize root growth, l:  gravel concentration and bulk density effects
SN  - 1573-5036
U1  - 77-167587 
PY  - 1977///
KW  - Maize
KW  - AGROVOC
KW  - Soil chemistry and physics
KW  - Zea mays
N1  - 20 ref. Summary (En); Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0032-079X
T2  - Plant and Soil
ER  -