00335nam a2200109 a 450000500170000002000150001708200210003210000230005324500660007626000630014230000200020520251202164146.0  a0930032055  a332.678,bD, blu  aBlumberg, Daniel A  aTactical economics: investment strategy in a changing economy  aEmeryvillebConsolidated Capital communication groupc1984  axxii,214p, 22cm