package manufacturing plants for the synthesis of ammonia, namely, ammonia synthesis machinery in the nature of machinery for the synthesis of ammonia

package plants for the synthesis of ammonia, namely, ammonia synthesis machinery

INSTALLATION AND INITIAL MAINTENANCE OF AMMONIA PLANTS AND FURNISHING ESPECIALLY PREPARED INSTRUCTIONS THEREFOR RELATING TO PLANT OPERATION AND MAINTENANCE

PACKAGE PLANTS FOR THE SYNTHESIS OF AMMONIA AND COMPONENTS OF SUCH PLANTS