The 20-cm Spiny Penis of the Argentine Lake Duck (Oxyura vittata)

  title={The 20-cm Spiny Penis of the Argentine Lake Duck (Oxyura vittata)},
  author={Kevin G. McCracken},
Ecologia permit numbers 0492, 00987, and 11782. We thank the Secretaria de la Marina, Sexta Zona Naval, Guaymas, for transportation and food deliveries. For logistic support, we are indebted to the Instituto Tecno16gico y de Estudios Superiores de MonterreyCampus Guaymas, Rescue One, A. Robles, E. Velarde, J. Guzman, L. Gonzales, Prescott College, Baja Expeditions, Special Expeditions, H. and V. Ballance, and T. Pfiester. We are grateful to Eureka Tents, Ocean Kayaks, S. Emlen, J. Guzman, and E… 

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