This is one of my favourite cookbooks! I have the paperback edition and it is stained and falling apart with use. My mother has this cookbook too, and we just refer to it as Jane. "It's in Jane", or "Jane has a good recipe for ...".
Half of the book is about food and nutrition and I haven't looked at it in years. What really works for me are the recipes. Her introductions are brief but make you feel like you have a friend in the kitchen. The approach to cooking is down-to-earth, keeping fat down without losing the flavour, lots of vegetables, and the results have always been great.
Many of her soup recipes have become such standards for me that I make them without reference to the book, and the hummus and baba ganouj recipes get raves from my guests every time I serve them.
It's a real winner!