use 'OR' only for genres

NetBiblio.php

@@ -13,7 +13,7 @@ use BSR\Lib\WebService;
 class NetBiblio extends WebService
 {
     /** @var string $version version number */
-    public static $version = '1.0.5';
+    public static $version = '1.0.6';
 
     private $login = '';
     private $client = 'website';
@@ -688,7 +688,8 @@ class NetBiblio extends WebService
                 (is_array($queryArray[$q]) && count($queryArray[$q]) > 0)
             )) {
                 if(is_array($queryArray[$q])) {
-                    $bs->addOrQuery($queryArray[$q], $q);
+                    // Genres cannot overlap, so we use 'OR', otherwise use 'AND'
+                    $bs->addCompoundQuery($queryArray[$q], $q, $q == 'genreCode' ? 'OR' : 'AND');
                 } else {
                     $bs->addQuery($queryArray[$q], $q);
                 }