00472 a2200181 4500 0131145568 631 ACQ 28683 49948 Acquaah, George Principles of crop production theory, techniques, and technology 2nd ed. New Jersey Pearson Education 2001 2005 xxvii,740p. ill 25cm Crop yields Food crops Field crops L 55287 55287 0 0 0 0 LEN MKDL MKDL LEN 2012-12-11 0 631ACQ 66161 2012-12-11 00:00:00 0.00 2016-10-31 L 0 0 0 0 REF MKDL MKDL REF 2015-11-06 0 631ACQ 68451 2015-11-06 00:00:00 0.00 2016-10-31 PR