00543pamaa2200169 4500 0000014022 20060630090000.0 0582018676 696 HAL 1988 TH7226 HAL 1988 HALL Design calculations for plumbing and heating engneers F. Hall. 2nd ed. Essex: Longman Scientific & Technical, 1988. vii, 211p.: 22cm. Plumbing -- Mathematics -- Problems, exercises, etc Heating -- Mathematics -- Problems, exercises, etc