00342    a2200121   4500082001600000100002400016245004400040250001200084260005100096300002000147650001700167650003600184  a631.62bPIC  aPickels, George W.   aDrainage and flood-control engineering   a2nd ed.  aNew YorkbMcGraw-Hill Book Companyc1925g1941  axii,476p.c22cm  aAnimal pests  aPlant injuries, diseases, pests