321
322
323
324
325
326
327
328
Published: 1966
Superior document: Transactions of the American Philosophical Society N.S.,56,1
329
330
331
Published: 1961
Superior document: Transactions of the American Philosophical Society N.S.,51,1
332
333
Published: 1947
Superior document: Circular / California Agricultural Extension Service 116
334
335
336
337
338
339
Published: c2009.
340
Published: c2010.