Learning to sing nonclassical musicRonald Combs, Robert P. G. Bowker · First published 1994Open the Tome
Bayou darter (Etheostoma rubrum)Fred Bagley, Bowker,Robert G., Mississippi. Dept. of Wildlife Conservation, U.S. Fish and Wildlife Service. Region 4. · First published 1990Open the Tome
Flattened musk turtle (Sternotherus depressus) recovery planJohn J. Pulliam, Robert G. Bowker, U.S. Fish and Wildlife Service. Region 4. · First published 1990Open the Tome
Odor and corrosion control in sanitary sewerage systems and treatment plantsRobert P. G. Bowker · First published 1989Open the Tome
