These monographical booklets cover a wide range of topics and each of them is generally split into a theoretical part and a practical part which usually expose an ascetical technique related with the topic of the booklet.
These monographical booklets cover a wide range of topics. Each of them is generally split into a theoretical part. Each of them is generally split into a practical part. This practical part usually expose an ascetical technique. This ascetical technique is related with the topic of the booklet.