Discovering whether programs work : a guide to statistical methods for program evaluation / Laura Irwin Langbein.

By: Material type: TextTextPublication details: Santa Monica, Calif. : Goodyear Pub. Co., c1980.Description: viii, 184 p. : ill. ; 23 cmISBN:
  • 0830222146 (pbk.)
DDC classification:
  • 361.6/07/2
LOC classification:
  • HA33 .L34 1980 .L34
Item type:
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