00826nam a2200205 a 450000500170000000800410001703500150005805000220007310000250009524501140012026000490023430000170028344001690030065000250046965000270049465000290052165000290055065000150057970000260059420260817162218.0                                          a.b10068545  aQE75 P9 no. 647-B  aImlay, Ralph Willard 0aAmmonites from the Buchia zones in northwestern California and southwestern Oregon,bby... and David L. Jones  aWashington :bU. S. Govt. Print. Off.,c1970  aiv, 59, 31 p 0aUnited States. Geological Survey. Professional paper ;vno. 647-BJurassic (Tithonian) and cretaceous Buchia zones in northwestern California and southwestern Oregon 0aPaleontologyxOregon 0aPaleontologyxJurassic 0aPaleontologyxCretaceous 0aPaleontologyxCalifornia 0aAmmonoidea1 aJones, David Lawrence