were so variable, a large sample of cones is needed to estimate the mean percentage. The mean percentage as derived from two cones ... have to be sampled to capture this variation. The operating procedure for making a decision to collectanbsp;...

Title | : | Estimating Sound Seeds in Ponderosa Pine Cones from Half-face Counts |

Author | : | J. M. Schmid, S. A. Mata, James C. Mitchell |

Publisher | : | - 1985 |

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