Caving basics

Caving basics

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System B: Sealed lead-acid battery rated at six volts, eight amp hours. Average voltage ... nickel-cadmium batteries Battery Chargers and chargers. Minera#39;s ... rM/ V ICi National LM 317K, LM317T, or LM350 Integrated Circuit 18 Caving Basics.

Title:Caving basics
Author: Jerry H. Hassemer, National Speleological Society. Caver Training Committee
Publisher: - 1987

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