Index: trunk/ippTasks/survey.pro
===================================================================
--- trunk/ippTasks/survey.pro	(revision 25785)
+++ trunk/ippTasks/survey.pro	(revision 25814)
@@ -4,6 +4,12 @@
 check.globals
 
-book create SURVEY_DIFF
-book create SURVEY_MAGIC
+book getbook SURVEY_DIFF -var isBook
+if ("$isBook" == "NULL")
+  book create SURVEY_DIFF
+end
+book getbook SURVEY_MAGIC -var isBook
+if ("$isBook" == "NULL")
+  book create SURVEY_MAGIC
+end
 
 $SURVEY_DIFF_DB = 0